C11112331312111112111133133313331333133313331333133313311211113311231233131   >>    C1111233131211111211113313331333133313331333133313331331121111331123123313   <<    C11112331312111112111133133313331333133313331333133313311211113311231233133   >>      C11112331312111112111133133313331333133313331333133313311211113311231233132   >>