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Only three words put A first and F third. There is nothing to strategise about, so this page is the list and an explanation of why it is so short.
F is an uncommon letter to begin with and it almost never lands in the third box behind an A. AFFIX, ALFAS and AWFUL are what English leaves, and each uses a different second letter.
AWFUL is the one you would meet in ordinary writing. AFFIX is reachable and it is also the one word here that repeats a letter. ALFAS is the plural of a grass and you would not produce it unprompted.
Each of the three takes a different letter in the second box, a different one in the fourth and a different one at the end. Every single position separates them completely.
So one confirmed letter anywhere settles the page. There is no branch to work through and no distribution worth reading.
On this pattern it usually is, simply because the other two are uncommon. Play it first.
The plural of alfa, a North African grass also written halfa. It is the only word here with L in the second box.
No. AFTER has F in the second box and T in the third, so it sits on the A first and T third pattern instead.