B3311331313231311331322331333132313232222331323132322331313311221   >>    B331133131323131133132233133313231323222233132313232233131331122   <<    B3311331313231311331322331333132313232222331323132322331313311223   >>      B3311331313231311331322331333132313232222331323132322331313311222   >>