C11112331312111112111133133313331333133313331333112211231212321   >>    C1111233131211111211113313331333133313331333133311221123121232   <<    C11112331312111112111133133313331333133313331333112211231212323   >>      C11112331312111112111133133313331333133313331333112211231212322   >>