Read the poem.

I like to bake a cake
And make sure nothing is at stake.
I had so many thrown in my face.
I'm in a race
To eat my lovely cake.
And sometimes its even fake!

Yet every single time.
No matter if it is coated in lime.
I end up with frosting
that is so dearly costing
in my face!
As i said i'm in a race
and I am not happy
and surly not sappy
that once again my face
and no different in every other case
get covered in cake
which I have to rake.

What is the rhyme scheme of the first stanza?