6 letter words:
faints9,
fitnas9,
5 letter words:
fains8,
faint8,
fasti8,
fiats8,
fitna8,
naifs8,
snift8,
antis5,
natis5,
saint5,
satin5,
stain5,
tains5,
4 letter words:
fain7,
fans7,
fast7,
fats7,
fiat7,
fins7,
fist7,
fits7,
naif7,
saft7,
sift7,
ains4,
aits4,
anis4,
anti4,
ants4,
isna4,
itas4,
nats4,
nits4,
sain4,
sant4,
sati4,
snit4,
tain4,
tais4,
tans4,
tins4,
3 letter words:
aft6,
fan6,
fas6,
fat6,
fin6,
fit6,
ifs6,
sif6,
ain3,
ais3,
ait3,
ani3,
ant3,
ins3,
ita3,
its3,
nas3,
nat3,
nis3,
nit3,
sai3,
san3,
sat3,
sin3,
sit3,
tai3,
tan3,
tas3,
tin3,
tis3,
2 letter words:
fa5,
if5,
ai2,
an2,
as2,
at2,
in2,
is2,
it2,
na2,
si2,
st2,
ta2,
ti2,