C31231211113311331323133313331333133313331121133133313113313233313211   >>    C3123121111331133132313331333133313331333112113313331311331323331321   <<    C31231211113311331323133313331333133313331121133133313113313233313213   >>      C31231211113311331323133313331333133313331121133133313113313233313212   >>