C31231211113311331323133313331333133313331333133313331311331333132233131221   >>    C3123121111331133132313331333133313331333133313331333131133133313223313122   <<    C31231211113311331323133313331333133313331333133313331311331333132233131223   >>      C31231211113311331323133313331333133313331333133313331311331333132233131222   >>