B331133131323131133132233133313233313331323133211331333133313232221211331
>>
B33113313132313113313223313331323331333132313321133133313331323222121133
<<
B331133131323131133132233133313233313331323133211331333133313232221211333
>>
B331133131323131133132233133313233313331323133211331333133313232221211332
>>