C11112331312111112111133133313331333133311222121111121111121111331323232331   >>    C1111233131211111211113313331333133313331122212111112111112111133132323233   <<    C11112331312111112111133133313331333133311222121111121111121111331323232333   >>      C11112331312111112111133133313331333133311222121111121111121111331323232332   >>