Now suppose that n is odd, n 6= 3 and k = n + 1. If |M| = 1, then G − V(M) is a connected claw-free subgraph
of G with even vertices. By Lemma 3.9, it has a perfect matching. When |M| 2, we can also claim that G − V(M)
is connected, and so has a perfect matching. In fact, suppose to the contrary that l 2. By Lemma 3.10 and (n + 1)-
regularity of G, each component has at least n − 2 vertices. Hence