C11111333133313232233133313331333133313331312111133133313112231211   >>    C1111133313331323223313331333133313331333131211113313331311223121   <<    C11111333133313232233133313331333133313331312111133133313112231213   >>      C11111333133313232233133313331333133313331312111133133313112231212   >>