B331133131323131133132233133313231333132233132313331333133313233213232212321
>>
B33113313132313113313223313331323133313223313231333133313331323321323221232
<<
B331133131323131133132233133313231333132233132313331333133313233213232212323
>>
B331133131323131133132233133313231333132233132313331333133313233213232212322
>>