6 letter words:
fusain9,
5 letter words:
fauns8,
naifs8,
snafu8,
unais5,
4 letter words:
fain7,
fans7,
faun7,
fins7,
funs7,
naif7,
ains4,
anis4,
anus4,
sain4,
unai4,
3 letter words:
fan6,
fas6,
fin6,
fun6,
ifs6,
ain3,
ais3,
ani3,
ins3,
nus3,
sau3,
sin3,
sun3,
uns3,
2 letter words:
fa5,
if5,
ai2,
an2,
as2,
in2,
is2,
na2,
nu2,
si2,
un2,
us2,