C31231211113313112133313331311331333133313331333133313132312231   >>    C3123121111331311213331333131133133313331333133313331313231223   <<    C31231211113313112133313331311331333133313331333133313132312233   >>      C31231211113313112133313331311331333133313331333133313132312232   >>