Another Puzzle!

Hey!

I know how much you guys like puzzles.
Well, another cat. A has put together a puzzle for you to solve!
So I'll hand it over to him:












All about my puzzle:
- The letters above a column are all the letters contained in the column below, but in alphabetical order.
- Same thing goes for the letters after the rows
- The black squares are spaces in between words
- Words only end with a black space, other wise they can keep going in the next row.

That's pretty much all you need to know.
Have fun.