B3311331313231311331322331333132322331323231333133313331311213231111   >>    B331133131323131133132233133313232233132323133313331333131121323111   <<    B3311331313231311331322331333132322331323231333133313331311213231113   >>      B3311331313231311331322331333132322331323231333133313331311213231112   >>