C11112331312111112111133133313331333133313331333133313231333133311222231   >>    C1111233131211111211113313331333133313331333133313331323133313331122223   <<    C11112331312111112111133133313331333133313331333133313231333133311222233   >>      C11112331312111112111133133313331333133313331333133313231333133311222232   >>