4 letter words:
fact9,
capi8,
pact8,
pica8,
fiat7,
pita6,
3 letter words:
fap8,
cap7,
pac7,
pic7,
aft6,
fat6,
fit6,
act5,
apt5,
cat5,
cit5,
pat5,
pia5,
pit5,
tap5,
tic5,
tip5,
ait3,
ita3,
tai3,
2 letter words:
fa5,
if5,
pa4,
pi4,
ai2,
at2,
it2,
ta2,
ti2,