B3311331313231311331322331333132313231333133313311221323132313232233132211   >>    B331133131323131133132233133313231323133313331331122132313231323223313221   <<    B3311331313231311331322331333132313231333133313311221323132313232233132213   >>      B3311331313231311331322331333132313231333133313311221323132313232233132212   >>