(1) Draw a tree with 6 nodes. (2) Draw a tree with 6 edges. (3) Draw a tree with 4 edges and 3 nodes. (1) Draw a simple connected graph (not a tree) with 6 vertices. (2) Draw a simple disconnected graph (not a tree) with 6 edges. (3) Draw a simple graph (not a tree) with 6 vertices and 5 edges