C11112331312111112111133133313331333133313123313331311331323123221211   >>    C1111233131211111211113313331333133313331312331333131133132312322121   <<    C11112331312111112111133133313331333133313123313331311331323123221213   >>      C11112331312111112111133133313331333133313123313331311331323123221212   >>