C11111333133313232233133313331333133313331312111133133312132311   >>    C1111133313331323223313331333133313331333131211113313331213231   <<    C11111333133313232233133313331333133313331312111133133312132313   >>      C11111333133313232233133313331333133313331312111133133312132312   >>