4 letter words:
fawn10,
waif10,
anow7,
fain7,
fano7,
faun7,
fino7,
foin7,
info7,
naif7,
wain7,
wino7,
naoi4,
unai4,
3 letter words:
faw9,
wof9,
auf6,
awn6,
fan6,
fin6,
fon6,
fou6,
fun6,
naw6,
now6,
oaf6,
own6,
ufo6,
wai6,
wan6,
win6,
won6,
ain3,
ani3,
ion3,
uni3,
2 letter words:
aw5,
fa5,
if5,
of5,
ow5,
wo5,
ai2,
an2,
in2,
io2,
na2,
no2,
nu2,
oi2,
on2,
ou2,
un2,