C11112331312111112111133133313331333132322121111331333133321123113211   >>    C1111233131211111211113313331333133313232212111133133313332112311321   <<    C11112331312111112111133133313331333132322121111331333133321123113213   >>      C11112331312111112111133133313331333132322121111331333133321123113212   >>