B33113313132313113313223313331323133313223313231333133112111113121111132321311   >>    B3311331313231311331322331333132313331322331323133313311211111312111113232131   <<    B33113313132313113313223313331323133313223313231333133112111113121111132321313   >>      B33113313132313113313223313331323133313223313231333133112111113121111132321312   >>