C11112331333132311331333133313331333112211231211113313331333133313232313233231   >>    C1111233133313231133133313331333133311221123121111331333133313331323231323323   <<    C11112331333132311331333133313331333112211231211113313331333133313232313233233   >>      C11112331333132311331333133313331333112211231211113313331333133313232313233232   >>