B33113313132313113313223313331323331333132211331323133313231111   >>    B3311331313231311331322331333132333133313221133132313331323111   <<    B33113313132313113313223313331323331333132211331323133313231113   >>      B33113313132313113313223313331323331333132211331323133313231112   >>