C11111333133313232233133313331333133313221333133313232223132232311   >>    C1111133313331323223313331333133313331322133313331323222313223231   <<    C11111333133313232233133313331333133313221333133313232223132232313   >>      C11111333133313232233133313331333133313221333133313232223132232312   >>