C31231211113311331323133313331333133313331333133313113313123221   >>    C3123121111331133132313331333133313331333133313331311331312322   <<    C31231211113311331323133313331333133313331333133313113313123223   >>      C31231211113311331323133313331333133313331333133313113313123222   >>