B331133131323131133132233133313113313331323121133133313231323131312121
>>
B33113313132313113313223313331311331333132312113313331323132313131212
<<
B331133131323131133132233133313113313331323121133133313231323131312123
>>
B331133131323131133132233133313113313331323121133133313231323131312122
>>