The Green Grass Grew All Around

In the woods, there was a hole (echo: there was a hole)
The prettiest hole (the prettiest hole)
That you ever did see (that you ever did see),
Oh a hole in the woods, a hole in the ground,
And the green grass grew all around, all around
And the green grass grew all around.

And in that hole (and in that hole)
There was a root (there was a root)
The prettiest root (the prettiest root)
That you ever did see (that you ever did see)
Oh a root in hole and a hole in the ground
And the green grass grew all around, all around
And the green grass grew all around.

Continue with

tree -- tree on a root, root in the hole, hole in the ground, and the green
grass grew?
branch ? branch on a tree, tree on a root, root in the hole, hole in the
ground?
nest ? nest on a branch?
egg ? egg on a nest?
bird ? bird in the egg?