B3311331313231311331322331333132313331323131323223313133313133313232223331   >>    B331133131323131133132233133313231333132313132322331313331313331323222333   <<    B3311331313231311331322331333132313331323131323223313133313133313232223333   >>      B3311331313231311331322331333132313331323131323223313133313133313232223332   >>