B331133131323131133132233133313231313331311331311331323223313231333131232212121
>>
B33113313132313113313223313331323131333131133131133132322331323133313123221212
<<
B331133131323131133132233133313231313331311331311331323223313231333131232212123
>>
B331133131323131133132233133313231313331311331311331323223313231333131232212122
>>