5 letter words:
finis8,
naifs8,
annas5,
naans5,
nanas5,
4 letter words:
fain7,
fans7,
fins7,
naif7,
ains4,
anas4,
anis4,
anna4,
ansa4,
inia4,
inns4,
naan4,
nana4,
nans4,
nisi4,
sain4,
3 letter words:
fan6,
fas6,
fin6,
ifs6,
aas3,
ain3,
ais3,
ana3,
ani3,
inn3,
ins3,
nan3,
sin3,
2 letter words:
fa5,
if5,
aa2,
ai2,
an2,
as2,
in2,
is2,
na2,
si2,