B331133131323131133132233133313233313331323133211331333133313232321111
>>
B33113313132313113313223313331323331333132313321133133313331323232111
<<
B331133131323131133132233133313233313331323133211331333133313232321113
>>
B331133131323131133132233133313233313331323133211331333133313232321112
>>