B33113313132313113313223313331323133313223313231333133313132322331323223312121
>>
B3311331313231311331322331333132313331322331323133313331313232233132322331212
<<
B33113313132313113313223313331323133313223313231333133313132322331323223312123
>>
B33113313132313113313223313331323133313223313231333133313132322331323223312122
>>