B3311331313231311331322331333131133132313131133133313232233132322331313221   >>    B331133131323131133132233133313113313231313113313331323223313232233131322   <<    B3311331313231311331322331333131133132313131133133313232233132322331313223   >>      B3311331313231311331322331333131133132313131133133313232233132322331313222   >>