B3311331313231311331322331333132313233313233231333133313232113313232212111211   >>    B331133131323131133132233133313231323331323323133313331323211331323221211121   <<    B3311331313231311331322331333132313233313233231333133313232113313232212111213   >>      B3311331313231311331322331333132313233313233231333133313232113313232212111212   >>