C31231211113313112133313331311331333133313331333133313331333133313231333231221   >>    C3123121111331311213331333131133133313331333133313331333133313331323133323122   <<    C31231211113313112133313331311331333133313331333133313331333133313231333231223   >>      C31231211113313112133313331311331333133313331333133313331333133313231333231222   >>