B3311331313231311331322331333132313231333131323223313232233312122311   >>    B331133131323131133132233133313231323133313132322331323223331212231   <<    B3311331313231311331322331333132313231333131323223313232233312122313   >>      B3311331313231311331322331333132313231333131323223313232233312122312   >>