diff --git a/.vscode/settings.json b/.vscode/settings.json
index 882c8c5..037adde 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,8 +1,10 @@
 {
     "python.linting.enabled": true,
+    "python.linting.pycodestyleEnabled": true,
     "python.testing.pytestArgs": [
         "tests"
     ],
     "python.testing.unittestEnabled": false,
     "python.testing.pytestEnabled": true,
+    
 }
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 1bae99c..61f39e7 100644
--- a/setup.py
+++ b/setup.py
@@ -6,12 +6,15 @@ setup(
     setup_requires=['setuptools_scm'],
     author='Maxim Slipenko',
     packages=['turinglab'],
-    install_requires = [
-        'python-docx'
+    install_requires=[
+        'python-docx',
+        'pydot',
+        'requests',
+        'sortedcontainers'
     ],
-    entry_points = {
+    entry_points={
         'console_scripts': [
             'turinglab = turinglab.__main__:main'
         ]
     }
-)
\ No newline at end of file
+)
diff --git a/turinglab/__main__.py b/turinglab/__main__.py
index a916508..414ac15 100644
--- a/turinglab/__main__.py
+++ b/turinglab/__main__.py
@@ -1,35 +1,39 @@
 import os
 import sys
 from argparse import ArgumentParser
-from turinglab.image import get_image
+# from turinglab.image import get_image
 from turinglab.input import from_file
 from turinglab.emulator import Emulator
-from turinglab.output import to_docx
+from turinglab.output import output
 
 
 def get_parser() -> ArgumentParser:
     parser = ArgumentParser()
-    parser.add_argument("input_file", type=str, help="Path to file with program",)
+    parser.add_argument("input_file", type=str,
+                        help="Path to file with program",)
     parser.add_argument("output_dir", type=str, help="Output dir")
-    parser.add_argument('-t','--tests', nargs='+', type=str, help='List of input strings for tests')
-    parser.add_argument('-e','--empty-character', type=str, help='Empty character')
-    parser.add_argument('-f','--force', default=False, action='store_true', help='Force rewrite output dir')
+    parser.add_argument("-t", '--tests', nargs='+', type=str,
+                        help='List of input strings for tests')
+    parser.add_argument('-e', '--empty-character',
+                        type=str, help='Empty character')
+    parser.add_argument('-f', '--force', default=False,
+                        action='store_true', help='Force rewrite output dir')
     return parser
 
+
 def main():
     parser = get_parser()
-
     args = parser.parse_args()
 
     program = from_file(args.input_file)
-    
-    if args.force == False and os.path.exists(args.output_dir):
+
+    if args.force is False and os.path.exists(args.output_dir):
         print('Directory already exists!')
         return -1
 
     os.makedirs(args.output_dir, exist_ok=True)
 
-    test_data = []
+    tests = []
 
     for test in args.tests:
         test = test.replace(args.empty_character, 'λ')
@@ -42,11 +46,13 @@ def main():
             tm.step()
             data.append(tm.info())
 
-        test_data.append(data)
+        tests.append(data)
+
+    output(args.output_dir, program, tests)
+
+    # to_docx(os.path.join(args.output_dir, 'report.docx'), program, test_data)
+    # get_image(os.path.join(args.output_dir, 'graph'), program)
 
-    to_docx(os.path.join(args.output_dir, 'report.docx'), program, test_data)
-    get_image(os.path.join(args.output_dir, 'graph'), program)
 
-        
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()
diff --git a/turinglab/emulator.py b/turinglab/emulator.py
index 2a090a8..38050ec 100644
--- a/turinglab/emulator.py
+++ b/turinglab/emulator.py
@@ -1,54 +1,135 @@
 from collections import defaultdict
+from sortedcontainers import SortedDict
+from copy import copy, deepcopy
+from enum import IntEnum
 
-DIRECTIONS = {
-    '>': 1,
-    '<': -1,
-    '.': 0
-}
+
+class Movemement(IntEnum):
+    R = 1
+    L = -1
+    E = 0
+
+
+class Action:
+    def __init__(
+        self,
+        state,
+        symbol: chr,
+        movement: Movemement
+    ) -> None:
+        self.state = state
+        self.symbol = symbol
+        self.movement = movement
+
+
+class Program:
+    data = dict()
+
+    state_count = 0
+    symbol_count = 0
+    symbol_dict = dict()
+
+    blank_symbol = 'λ'
+
+    def __init__(self, blank_symbol: chr = 'λ') -> None:
+        self.blank_symbol = blank_symbol
+
+    def is_blank(self, symbol) -> bool:
+        return symbol == self.blank_symbol
+
+    def set(self, state, symbol, action) -> None:
+        if state not in self.data:
+            self.data[state] = dict()
+            self.state_count += 1
+
+        self.symbol_dict[symbol] = None
+        self.data[state][symbol] = action
+
+    def get(self, state, symbol) -> Action or None:
+        if symbol not in self.data[state]:
+            return None
+
+        return self.data[state][symbol]
+
+    def get_symbols(self):
+        return list(self.symbol_dict.keys())
 
 
 class Emulator():
-    '''
+    """
     A class used to emulate an Turing machine
-    '''
+    """
 
-    def __init__(self, instructions, input_string: str = '', blank_symbol: chr = 'λ'):
+    class Tape:
+
+        l_index = 0
+        r_index = 0
+
+        def __init__(self, input_string: str, blank_symbol: str) -> None:
+            self.tape = SortedDict(dict(enumerate(input_string)))
+            self.blank_symbol = blank_symbol
+
+            r_index = len(input_string)
+            pass
+
+        def __deepcopy__(self, memo):
+            id_self = id(self)
+            _copy = memo.get(id_self)
+            if _copy is None:
+                _copy = type(self)('', self.blank_symbol)
+
+                _copy.tape = deepcopy(self.tape)
+                _copy.blank_symbol = self.blank_symbol
+                _copy.l_index = self.l_index
+                _copy.r_index = self.r_index
+
+                memo[id_self] = _copy
+            return _copy
+
+        def __setitem__(self, key, value):
+            self.tape[key] = value
+            self.l_index = min(self.l_index, key)
+            self.r_index = max(self.r_index, key)
+
+        def __getitem__(self, key):
+            if key not in self.tape:
+                return self.blank_symbol
+
+            return self.tape[key]
+
+        def values(self):
+            return self.tape.values()
+
+    def __init__(self, program: Program, input_string: str = ''):
         self.head = 0
-        self.current_state = 0
-
-        self.blank_symbol = blank_symbol
-        self.instructions = instructions
-
+        self.state = 0
         self.stopped = False
 
-        self.tape = defaultdict(lambda: self.blank_symbol, dict(enumerate(input_string)))
+        self.program = program
+        self.tape = Emulator.Tape(input_string, program.blank_symbol)
 
     def step(self):
-        if self.stopped == True:
+        if self.stopped is True:
             raise RuntimeError('Turing machine is stopped!')
 
-        symbol = self.tape[self.head]
-
         try:
-            symbol, direction, state = self.instructions[symbol][self.current_state]
-            self.tape[self.head] = symbol
+            action = self.program.get(self.state, self.tape[self.head])
 
-            self.current_state = state
-            self.head += DIRECTIONS[direction]
-            
+            self.tape[self.head] = action.symbol
+            self.state = action.state
+            self.head += int(action.movement)
             self.tape[self.head] = self.tape[self.head]
-            
-            if self.head < 0:
-                self.tape = defaultdict(lambda: self.blank_symbol, (sorted(self.tape.items())))
 
-            if self.current_state == -1:
+            if self.state == -1:
                 self.stopped = True
 
-        except:
+        except Exception as err:
             self.stopped = True
+            print('Error', err)
 
     def info(self):
-        return [self.head, self.current_state, defaultdict(lambda: self.blank_symbol, self.tape)]
-
-        
-
+        return [
+            self.head,
+            self.state,
+            deepcopy(self.tape),
+        ]
diff --git a/turinglab/image.py b/turinglab/image.py
deleted file mode 100644
index 7ab4341..0000000
--- a/turinglab/image.py
+++ /dev/null
@@ -1,60 +0,0 @@
-import pydot
-import requests
-import shutil
-
-def get_image(filename, program):
-    g = pydot.Dot('my_graph', nodesep=0.5)
-    g.set_node_defaults(
-        width='1.5',
-        fontsize='18',
-        shape='circle'
-    )
-
-    rows = 0
-    cols = len(program.keys())
-
-    for x in program.keys():
-        if len(list(program[x].keys())) == 0: 
-            continue
-        rows = max(list(program[x].keys())[-1] + 1, rows)
-
-    program_table = [None] * rows
-
-    for i in range(rows):
-        program_table[i] = [None] * cols
-
-    symbols = [None] * cols
-
-    for j, (symbol, value) in enumerate(program.items()):
-        symbols[j] = symbol
-        for i, (state, action) in enumerate(value.items()):
-            program_table[state][j] = action
-
-    g.add_node(pydot.Node(f'gz', label='<g<SUB>z</SUB>>', shape='circle'))
-
-    for i in range(rows):
-        g.add_node(pydot.Node(f'g{i}', label=f'<g<SUB>{i}</SUB>>', shape='circle'))
-        for j in range(cols):
-            action = program_table[i][j]
-            if action is None: continue
-
-            symbol, direction, state = action
-            label = symbols[j] + '/' + symbol + '/' + ('R' if direction == '>' else 'L')
-            src = f'g{i}'
-            dst = f'g{"z" if state == -1 else state}'
-            if src == dst:
-                src = src + ':ne'
-                dst = dst + ':se'
-            g.add_edge(pydot.Edge(src, dst, label = label))
-
-
-    g.write_raw(f'{filename}.dot', encoding='utf-8')
-
-    try:
-        g.write_svg(f'{filename}.svg', encoding='utf-8')
-    except Exception:
-        output_raw_dot = g.to_string()
-        img_data = requests.get("https://quickchart.io/graphviz?graph=" + output_raw_dot).content
-        with open(f'{filename}_quickchart.svg', 'wb') as handler:
-            handler.write(img_data)
-    
\ No newline at end of file
diff --git a/turinglab/input.py b/turinglab/input.py
index 53ed842..2ace6b9 100644
--- a/turinglab/input.py
+++ b/turinglab/input.py
@@ -1,78 +1,38 @@
-import csv
 import re
+from turinglab.emulator import Program, Movemement, Action
 
-def from_tur(filename):
-    f = open(filename, "rb")
-    raw = []
-    byte = f.read(1)
-    while byte:
-        raw.append(byte)
-        byte = f.read(1)
-    indx = [0]
-    empty = [b'\x00', b'\x00', b'\x00']
-    for i in range(len(raw) - 2):
-        if raw[i:i+3] == empty:
-            indx.append(i)
-            indx.append(i+3)
-        
-    data = []
-    for i in range(1, len(indx)):
-        packet = raw[indx[i - 1]:indx[i]]
-        if packet != empty:
-            data.append(packet)
-    
-    task = b''.join(data[1]).decode('cp1251')
-    description = b''.join(data[4]).decode('cp1251')
-    solution = b''.join(data[3][:-2]).decode('cp1251')
-    solution = list(csv.reader(solution.split('\r\n'), delimiter='\t'))
-
-    header = solution[:1][0][1:]
-
-    solution_dict = [dict() for x in range(len(header))]
-
-    for x in solution[1:]:
-        symbol = x[0] if x[0] != ' ' else 'λ'
-
-        for (i, action) in enumerate(x[1:]):
-            action = list(action)
-            if len(action) == 0:
-                continue
-            
-            if action[0] == '_':
-                action[0] = 'λ'
-
-            action[2] = int(action[2]) - 1
-
-
-            solution_dict[i][symbol] = action
-
-    return solution_dict, task, description
 
 def from_file(filename: str):
+
     f = open(filename, "r")
 
-    program = dict()
+    program = Program(blank_symbol="_")
+
+    # program = dict()
 
     for line in f:
         symbol, *actions = line.replace("\n", "").split('\t')
 
         if symbol == " ":
-            symbol = "λ"
-
-        program[symbol] = dict()
+            symbol = "_"
 
         for i, action in enumerate(actions):
-            if not action: 
+            if not action:
                 continue
 
             new_symbol, direction, new_state = re.split('([<|>|.])', action)
-
-            if new_symbol == "_":
-                new_symbol = 'λ'
             new_state = int(new_state) - 1
 
-            program[symbol][i] = ([new_symbol, direction, new_state])
+            movement = {
+                '>': Movemement.R,
+                '.': Movemement.E,
+                '<': Movemement.L
+            }[direction]
+
+            program.set(i, symbol, Action(new_state, new_symbol, movement))
+
+            # program[symbol][i] = ([new_symbol, direction, new_state])
 
     f.close()
 
-    return program
\ No newline at end of file
+    return program
diff --git a/turinglab/output.py b/turinglab/output.py
index 5157408..35d02f2 100644
--- a/turinglab/output.py
+++ b/turinglab/output.py
@@ -1,107 +1,123 @@
-from turinglab.image import get_image
+import pydot
+import requests
+import shutil
+from os import path
 from docx import Document
-from docx.oxml import OxmlElement
-from docx.oxml.ns import qn
-from docx.shared import Pt, Inches
+from docx.shared import Pt
 from docx.enum.text import WD_LINE_SPACING
-from docx.enum.text import WD_ALIGN_PARAGRAPH 
+from docx.enum.text import WD_ALIGN_PARAGRAPH
+from turinglab.emulator import Movemement, Program
 
-def add_state(p, state):
-    p.add_run('q')
-    index_text = p.add_run(str('z' if state == -1 else state))
-    index_text.font.subscript = True
 
-def create_paragraph(document):
-    p = document.add_paragraph()
-    style_paragraph(p)
-    return p
+def output(
+    directory,
+    program: Program,
+    tests,
+    docx_name="report",
+    graph_name="graph"
+):
+    """Create output of a program and tests. It's includes a docx file with
+    a 'command system', 'functional table' and tests.
+    """
 
-def style_paragraph(p):
-    p.paragraph_format.space_after = Pt(0)
-    p.paragraph_format.space_before = Pt(0)
-    p.paragraph_format.line_spacing_rule = WD_LINE_SPACING.ONE_POINT_FIVE
+    def create_paragraph(document, text=""):
+        p = document.add_paragraph(text)
+        style_paragraph(p)
+        return p
+
+    def style_paragraph(p):
+        p.paragraph_format.space_after = Pt(0)
+        p.paragraph_format.space_before = Pt(0)
+        p.paragraph_format.line_spacing_rule = WD_LINE_SPACING.ONE_POINT_FIVE
+
+    def state_index(state):
+        return str('z' if state == -1 else state)
+
+    def add_state(p, state):
+        p.add_run('q')
+        index_text = p.add_run(state_index(state))
+        index_text.font.subscript = True
+
+    def get_symbol(x):
+        return x if program.is_blank(x) is False else 'λ'
 
-def to_docx(filename, program, data):
     document = Document()
-    
-    style = document.styles['Normal']
-    font = style.font
-    font.name = 'Times New Roman'
-    font.size = Pt(14)
 
-    rows = 0
-    cols = len(program.keys())
+    #
+    # Command system
+    #
+    create_paragraph(document, "Система команд:")
 
-    for x in program.keys():
-        if len(list(program[x].keys())) == 0: 
-            continue
-        rows = max(list(program[x].keys())[-1] + 1, rows)
+    symbols = program.get_symbols()
 
-    program_table = [None] * rows
+    cols = len(symbols)
+    rows = program.state_count
+    program_table = [[[None] for n in range(cols)] for m in range(rows)]
 
     for i in range(rows):
-        program_table[i] = [None] * cols
+        for j in range(cols):
+            program_table[i][j] = program.get(i, symbols[j])
 
-    symbols = [None] * cols
-
-    for j, (symbol, value) in enumerate(program.items()):
-        symbols[j] = symbol
-        for i, (state, action) in enumerate(value.items()):
-            program_table[state][j] = action
-        
     for i in range(rows):
         for j in range(cols):
             action = program_table[i][j]
-            if action is None: continue
+            if action is None:
+                continue
 
             p = create_paragraph(document)
             add_state(p, i)
 
-            symbol, direction, state = action
+            movement = Movemement(action.movement).name
 
-            p.add_run(symbols[j] + ' → ')
-            add_state(p, state)
-            p.add_run(symbol + ('R' if direction == '>' else 'L'))
+            p.add_run(get_symbol(symbols[j]) + ' → ')
+            add_state(p, action.state)
+            p.add_run(get_symbol(action.symbol) + movement)
 
-
-    p = create_paragraph(document)
+    #
+    # Functional table
+    #
+    create_paragraph(document)
+    create_paragraph(document, "Функциональная таблица:")
 
     table = document.add_table(rows + 1, cols + 1)
     table.style = 'Table Grid'
     table.autofit = True
     table.allow_autofit = True
-    
+
     for i in range(0, rows):
         p = table.rows[i + 1].cells[0].paragraphs[0]
         p.alignment = WD_ALIGN_PARAGRAPH.CENTER
         style_paragraph(p)
         add_state(p, i)
-    
-    for i, x in enumerate(program.keys()):
+
+    for i, x in enumerate(symbols):
         p = table.rows[0].cells[i + 1].paragraphs[0]
         p.alignment = WD_ALIGN_PARAGRAPH.CENTER
         style_paragraph(p)
-        p.add_run(x)
+        p.add_run(get_symbol(x))
 
     for i in range(rows):
         for j in range(cols):
             action = program_table[i][j]
-            if action is None: continue
+            if action is None:
+                continue
 
             p = table.rows[i + 1].cells[j + 1].paragraphs[0]
             p.alignment = WD_ALIGN_PARAGRAPH.CENTER
             style_paragraph(p)
 
-            symbol, direction, state = action
-            add_state(p, state)
-            p.add_run(symbol)
-            p.add_run('R' if direction == '>' else 'L')
+            movement = Movemement(action.movement).name
+            add_state(p, action.state)
+            p.add_run(get_symbol(action.symbol) + movement)
 
+    #
+    # Tests
+    #
     p = create_paragraph(document)
 
-    for i, test in enumerate(data):
+    for i, test in enumerate(tests):
         p = create_paragraph(document)
-        p.add_run(f'Test {i + 1}:')
+        p.add_run(f'Тест {i + 1}')
 
         for j, data in enumerate(test):
             p = create_paragraph(document)
@@ -113,15 +129,76 @@ def to_docx(filename, program, data):
             p.add_run(': ')
 
             head, state, tape = data
-            offset = list(tape.keys())[0]
-            head -= offset
+
             tape_str = ''.join(tape.values())
+            head -= tape.l_index
 
-            p.add_run(tape_str[:head].lstrip('λ') + 'q')
+            left_str = tape_str[:head].lstrip(program.blank_symbol)
+            left_str = left_str.replace(program.blank_symbol, 'λ')
+            right_str = tape_str[head + 1:].rstrip(program.blank_symbol)
+            right_str = right_str.replace(program.blank_symbol, 'λ')
 
-            index_text = p.add_run(str('z' if state == -1 else state))
-            index_text.font.subscript = True
+            p.add_run(left_str)
+            add_state(p, state)
+            p.add_run(get_symbol(tape_str[head]))
+            p.add_run(right_str)
 
-            p.add_run(tape_str[head] + tape_str[head + 1:].rstrip('λ'))
-        
-    document.save(filename)
\ No newline at end of file
+    document.save(path.join(directory, docx_name + ".docx"))
+
+    #
+    # Image
+    #
+
+    g = pydot.Dot("mygraph", nodesep=0.75)
+
+    g.set_node_defaults(
+        width='1.5',
+        fontsize='40',
+        shape='circle'
+    )
+    g.set_edge_defaults(
+        fontsize='20'
+    )
+
+    end_node = pydot.Node(f'gz', label='<g<SUB>z</SUB>>', shape='circle')
+    g.add_node(end_node)
+
+    for i in range(rows):
+        node = pydot.Node(f'g{i}', label=f'<g<SUB>{i}</SUB>>', shape='circle')
+        g.add_node(node)
+        for j in range(cols):
+            action = program_table[i][j]
+            if action is None:
+                continue
+
+            movement = Movemement(action.movement).name
+
+            label = get_symbol(symbols[j]) +\
+                '/' + get_symbol(action.symbol) +\
+                '/' + movement
+
+            src = f'g{i}'
+            dst = f'g{state_index(action.state)}'
+            if src == dst:
+                src = src + ':ne'
+                dst = dst + ':se'
+
+            g.add_edge(pydot.Edge(src, dst, label=label))
+
+    dot_path = path.join(directory, f'{graph_name}.dot')
+    g.write_raw(dot_path, encoding='utf-8')
+
+    try:
+        svg_path = path.join(directory, f'{graph_name}.svg')
+
+        g.write_svg(svg_path, encoding='utf-8')
+    except Exception:
+        output_raw_dot = g.to_string()
+        img_data = requests.get(
+            "https://quickchart.io/graphviz?graph=" + output_raw_dot
+        ).content
+
+        svg_path = path.join(directory, f'{graph_name}_quickchart.svg')
+
+        with open(svg_path, 'wb') as handler:
+            handler.write(img_data)