C31231211113313121211113313331333133313311211331333133313331311331323132231221   >>    C3123121111331312121111331333133313331331121133133313331333131133132313223122   <<    C31231211113313121211113313331333133313311211331333133313331311331323132231223   >>      C31231211113313121211113313331333133313311211331333133313331311331323132231222   >>