I Know I Know

I know it's not much
But this much I know...

I know 
I know 
That I know
What I know

I know
I don't know
What I don't know
I know

No, I don't know 
What I don't know 
I know 

I don't, no
I don't know
What I don't know 
I know

I know that's not much
That's as much as I know

And that is as much
And as such as I go.