B3311331313231311331322331333132313232222331323132322331323132313132322311   >>    B331133131323131133132233133313231323222233132313232233132313231313232231   <<    B3311331313231311331322331333132313232222331323132322331323132313132322313   >>      B3311331313231311331322331333132313232222331323132322331323132313132322312   >>