C11112331312111112111133133313331333133313331333133313231333133311213111   >>    C1111233131211111211113313331333133313331333133313331323133313331121311   <<    C11112331312111112111133133313331333133313331333133313231333133311213113   >>      C11112331312111112111133133313331333133313331333133313231333133311213112   >>