B3311331313231311331322331333132313132313331323223313232313123221   >>    B331133131323131133132233133313231313231333132322331323231312322   <<    B3311331313231311331322331333132313132313331323223313232313123223   >>      B3311331313231311331322331333132313132313331323223313232313123222   >>