C31231211113313112133313331311331333133313331333133313311212211321   >>    C3123121111331311213331333131133133313331333133313331331121221132   <<    C31231211113313112133313331311331333133313331333133313311212211323   >>      C31231211113313112133313331311331333133313331333133313311212211322   >>