B33113313132313113313223313331323132313331333133112111133133313232223132332211   >>    B3311331313231311331322331333132313231333133313311211113313331323222313233221   <<    B33113313132313113313223313331323132313331333133112111133133313232223132332213   >>      B33113313132313113313223313331323132313331333133112111133133313232223132332212   >>