B331133131323131133132233133313231323132333133313133313331323132213121121
>>
B33113313132313113313223313331323132313233313331313331333132313221312112
<<
B331133131323131133132233133313231323132333133313133313331323132213121123
>>
B331133131323131133132233133313231323132333133313133313331323132213121122
>>