C11112331312111112111133133313331333132322121111331333133321123221211   >>    C1111233131211111211113313331333133313232212111133133313332112322121   <<    C11112331312111112111133133313331333132322121111331333133321123221213   >>      C11112331312111112111133133313331333132322121111331333133321123221212   >>