C31231211113311331323133313331333133313331121133133313113313232313221   >>    C3123121111331133132313331333133313331333112113313331311331323231322   <<    C31231211113311331323133313331333133313331121133133313113313232313223   >>      C31231211113311331323133313331333133313331121133133313113313232313222   >>