5 letter words:
naffs11,
niffs11,
sniff11,
fains8,
finis8,
naifs8,
4 letter words:
fifi10,
naff10,
niff10,
fain7,
fans7,
fini7,
fins7,
naif7,
ains4,
anis4,
inia4,
isna4,
nisi4,
sain4,
3 letter words:
aff9,
iff9,
fan6,
fas6,
fin6,
ifs6,
sif6,
ain3,
ais3,
ani3,
ins3,
nas3,
nis3,
sai3,
san3,
sin3,
2 letter words:
fa5,
if5,
ai2,
an2,
as2,
in2,
is2,
na2,
si2,