C111112111133131121133133313331333133311221123121111331323223211231   >>    C11111211113313112113313331333133313331122112312111133132322321123   <<    C111112111133131121133133313331333133311221123121111331323223211233   >>      C111112111133131121133133313331333133311221123121111331323223211232   >>