B331133131323131133132233133313231323223313131133133313231333132211331
>>
B33113313132313113313223313331323132322331313113313331323133313221133
<<
B331133131323131133132233133313231323223313131133133313231333132211333
>>
B331133131323131133132233133313231323223313131133133313231333132211332
>>