C11112331312111112111133133313331333133313331333133313311211111323311221   >>    C1111233131211111211113313331333133313331333133313331331121111132331122   <<    C11112331312111112111133133313331333133313331333133313311211111323311223   >>      C11112331312111112111133133313331333133313331333133313311211111323311222   >>