B331133131323131133132233133313231313231333132322331333132313211111
>>
B33113313132313113313223313331323131323133313232233133313231321111
<<
B331133131323131133132233133313231313231333132322331333132313211113
>>
B331133131323131133132233133313231313231333132322331333132313211112
>>