C312312111133131121333133313113313331333133313331333133313331333133312123231   >>    C31231211113313112133313331311331333133313331333133313331333133313331212323   <<    C312312111133131121333133313113313331333133313331333133313331333133312123233   >>      C312312111133131121333133313113313331333133313331333133313331333133312123232   >>