C11111333133313232233133313331333133313331312111133133313232231321   >>    C1111133313331323223313331333133313331333131211113313331323223132   <<    C11111333133313232233133313331333133313331312111133133313232231323   >>      C11111333133313232233133313331333133313331312111133133313232231322   >>