B3311331313231311331322331333132313331323131323223313133313331323123121211   >>    B331133131323131133132233133313231333132313132322331313331333132312312121   <<    B3311331313231311331322331333132313331323131323223313133313331323123121213   >>      B3311331313231311331322331333132313331323131323223313133313331323123121212   >>