B3311331313231311331322331333132313232233132313133313331323132322122221   >>    B331133131323131133132233133313231323223313231313331333132313232212222   <<    B3311331313231311331322331333132313232233132313133313331323132322122223   >>      B3311331313231311331322331333132313232233132313133313331323132322122222   >>