B331133131323131133132233133313232213231322331323133313232211111
>>
B33113313132313113313223313331323221323132233132313331323221111
<<
B331133131323131133132233133313232213231322331323133313232211113
>>
B331133131323131133132233133313232213231322331323133313232211112
>>