B331133131323131133132233133313231323133313132322331333132313132312121
>>
B33113313132313113313223313331323132313331313232233133313231313231212
<<
B331133131323131133132233133313231323133313132322331333132313132312123
>>
B331133131323131133132233133313231323133313132322331333132313132312122
>>