C312312111133131121333133313113313331333133313331333113313232231   >>    C31231211113313112133313331311331333133313331333133311331323223   <<    C312312111133131121333133313113313331333133313331333113313232233   >>      C312312111133131121333133313113313331333133313331333113313232232   >>