C31231211113313121211113313331323133313331333133313331121132233221   >>    C3123121111331312121111331333132313331333133313331333112113223322   <<    C31231211113313121211113313331323133313331333133313331121132233223   >>      C31231211113313121211113313331323133313331333133313331121132233222   >>