5 letter words:
afrit8,
faint8,
infra8,
atrip7,
inapt7,
paint7,
patin7,
pinta7,
print7,
tapir7,
riant5,
train5,
4 letter words:
frap9,
fain7,
fair7,
fart7,
fiar7,
fiat7,
firn7,
frat7,
frit7,
naif7,
raft7,
rift7,
nipa6,
pain6,
pair6,
pant6,
part6,
pian6,
pina6,
pint6,
pirn6,
pita6,
prat6,
rapt6,
tarp6,
trap6,
trip6,
airn4,
airt4,
anti4,
rain4,
rani4,
rant4,
tain4,
tarn4,
3 letter words:
aft6,
arf6,
fan6,
far6,
fat6,
fin6,
fir6,
fit6,
rif6,
apt5,
nap5,
nip5,
pan5,
par5,
pat5,
pia5,
pin5,
pit5,
rap5,
rip5,
tap5,
tip5,
ain3,
air3,
ait3,
ani3,
ant3,
art3,
nit3,
rai3,
ran3,
rat3,
ria3,
rin3,
tan3,
tar3,
tin3,
2 letter words:
fa5,
if5,
pa4,
pi4,
ai2,
an2,
ar2,
at2,
in2,
it2,
na2,
ta2,
ti2,