elif read_val == 1:
turing_machine.write("1")
turing_machine.moveLeft()
state = 1
elif state == 1:
if read_val == None:
turing_machine.write(None)
turing_machine.moveLeft()
state = 2
elif read_val == 1:
turing_machine.write(1)
turing_machine.moveLeft()
elif state == 2 :
if read_val == None:
turing_machine.write(None)
turing_machine.moveRight()
state = 3
elif read_val == 1:
turing_machine.write(1)
turing_machine.moveLeft()
elif state == 3 :
if read_val ==None:
turing_machine.write(None)
turing_machine.moveRight()
elif read_val == 1:
turing_machine.write(1)
turing_machine.moveRight()
state = 4
elif state == 4:
if read_val == None:
turing_machine.write(None)
