6 letter words:
infuse9,
5 letter words:
fines8,
fusee8,
neifs8,
ensue5,
seine5,
4 letter words:
enuf7,
fees7,
fens7,
feus7,
fine7,
fins7,
funs7,
fuse7,
neif7,
seif7,
esne4,
seen4,
sene4,
sine4,
3 letter words:
efs6,
fee6,
fen6,
fes6,
feu6,
fie6,
fin6,
fun6,
ifs6,
ens3,
ins3,
nee3,
nus3,
see3,
sei3,
sen3,
sin3,
sue3,
sun3,
uns3,
use3,
2 letter words:
ef5,
fe5,
if5,
en2,
es2,
in2,
is2,
ne2,
nu2,
si2,
un2,
us2,