B33113313132313113313223313331323133313223313231333133313231323221333133312131   >>    B3311331313231311331322331333132313331322331323133313331323132322133313331213   <<    B33113313132313113313223313331323133313223313231333133313231323221333133312133   >>      B33113313132313113313223313331323133313223313231333133313231323221333133312132   >>