B3311331313231311331322331333132313231333133313311231211233132313232233132211   >>    B331133131323131133132233133313231323133313331331123121123313231323223313221   <<    B3311331313231311331322331333132313231333133313311231211233132313232233132213   >>      B3311331313231311331322331333132313231333133313311231211233132313232233132212   >>