RB'S QUESTION OF THE DAY: August 5, 2013: Let's play a game!

Let's play a game!
Each word must have exactly four letters, using three letters of the previous word, in the order they appeared in that word. (For instance, "stay" could become "slay" or "slam" or "spay" etc.)
No word may be used more than once.
Each player may play only one word and must wait to play another until someone else has played a word.
The beginning word is: PRAY