B3311331313231311331322331333132313331323131323223313133313331323132332212311   >>    B331133131323131133132233133313231333132313132322331313331333132313233221231   <<    B3311331313231311331322331333132313331323131323223313133313331323132332212313   >>      B3311331313231311331322331333132313331323131323223313133313331323132332212312   >>