B3311331313231311331322331333132322331323231333133313331311112121   >>    B331133131323131133132233133313232233132323133313331333131111212   <<    B3311331313231311331322331333132322331323231333133313331311112123   >>      B3311331313231311331322331333132322331323231333133313331311112122   >>