C1111233131211111211113313331333133313232313331333133313331311331123322231   >>    C111123313121111121111331333133313331323231333133313331333131133112332223   <<    C1111233131211111211113313331333133313232313331333133313331311331123322233   >>      C1111233131211111211113313331333133313232313331333133313331311331123322232   >>