B331133131323131133132233133313231323133313331331123231323132313221212121
>>
B33113313132313113313223313331323132313331333133112323132313231322121212
<<
B331133131323131133132233133313231323133313331331123231323132313221212123
>>
B331133131323131133132233133313231323133313331331123231323132313221212122
>>