C11112331312111112111133133313331333133313331333133313331333133311213111221   >>    C1111233131211111211113313331333133313331333133313331333133313331121311122   <<    C11112331312111112111133133313331333133313331333133313331333133311213111223   >>      C11112331312111112111133133313331333133313331333133313331333133311213111222   >>