B3311331313231311331322331333132313331323133313233313232233132323323221   >>    B331133131323131133132233133313231333132313331323331323223313232332322   <<    B3311331313231311331322331333132313331323133313233313232233132323323223   >>      B3311331313231311331322331333132313331323133313233313232233132323323222   >>