Jose thats correct as he divulged that to me once.
It must have been successful for him as he started with $10 bets and a week later his bets were a thousand (posted on Propun)

So I guess it may have been

1st - 3rd Fav

Place must be 1/2 of win price.

I cant see many bets coming up with it but I gave him many trifectas and 1st 4,s when I was posting tips under "Uncle Dicks Tip for the ladies "on another forum.
As I recall he was ecstatic and overwhelmed with gratitude.

Cheers
darky