What is complete poem spring has sprung by ee Cummings?

There are many versions of this poem.

Version 1:

Spring is sprung.

The grass is riz.

I wonder where the birdie is?

The bird is on the wing.

Now isn't that absurd?

I always thought the wing was on the bird!

This poem is often attributed to ee cummings or Ogden Nash. However, it is actually by that well known poet 'Anonymous'.

Version 2:

Spring has newly sprung

the hills are full of grass

and along comes a billy-goat

sliding on his overcoat

down the summer pass.

This version was written by Ogden Nash.