C1111233133313231133133313331333133311221123121111331333133313331311331233231   >>    C111123313331323113313331333133313331122112312111133133313331333131133123323   <<    C1111233133313231133133313331333133311221123121111331333133313331311331233233   >>      C1111233133313231133133313331333133311221123121111331333133313331311331233232   >>