B331133131323131133132233133313231323132313231313331323133313232223312121
>>
B33113313132313113313223313331323132313231323131333132313331323222331212
<<
B331133131323131133132233133313231323132313231313331323133313232223312123
>>
B331133131323131133132233133313231323132313231313331323133313232223312122
>>