C31231211113313112133313331311331333133313311211113313331323213231323221   >>    C3123121111331311213331333131133133313331331121111331333132321323132322   <<    C31231211113313112133313331311331333133313311211113313331323213231323223   >>      C31231211113313112133313331311331333133313311211113313331323213231323222   >>