C312312111133131121333133313113313331333133313331333133313331333133313111221221   >>    C31231211113313112133313331311331333133313331333133313331333133313331311122122   <<    C312312111133131121333133313113313331333133313331333133313331333133313111221223   >>      C312312111133131121333133313113313331333133313331333133313331333133313111221222   >>