print('\\a\'b');  # Prints: \a'b

##</code><code>##

print('\\\\a');   # Prints: \\a
print('\\\a');    # Prints: \\a
print('\\a');     # Prints: \a
print('\a');      # Prints: \a

print('\\\\\'');  # Prints: \\'
print('\\\\'');   # Syntax error
print('\\\'');    # Prints: \'
print('\\'');     # Syntax error
print('\'');      # Prints: '