C11112331312111112111133133313331333133313331333133313231323222211   >>    C1111233131211111211113313331333133313331333133313331323132322221   <<    C11112331312111112111133133313331333133313331333133313231323222213   >>      C11112331312111112111133133313331333133313331333133313231323222212   >>