B33113313132313113313223313331323131133131121111221123232233111   >>    B3311331313231311331322331333132313113313112111122112323223311   <<    B33113313132313113313223313331323131133131121111221123232233113   >>      B33113313132313113313223313331323131133131121111221123232233112   >>