B33113313132313113313223313331323131323133313232233132221212321   >>    B3311331313231311331322331333132313132313331323223313222121232   <<    B33113313132313113313223313331323131323133313232233132221212323   >>      B33113313132313113313223313331323131323133313232233132221212322   >>