B331133131323131133132233133313113313231313331323223313133313231323132312121
>>
B33113313132313113313223313331311331323131333132322331313331323132313231212
<<
B331133131323131133132233133313113313231313331323223313133313231323132312123
>>
B331133131323131133132233133313113313231313331323223313133313231323132312122
>>