5 letter words:
fines8,
neifs8,
seine5,
4 letter words:
fees7,
fens7,
fine7,
fins7,
neif7,
seif7,
esne4,
seen4,
sene4,
sine4,
3 letter words:
efs6,
fee6,
fen6,
fes6,
fie6,
fin6,
ifs6,
ens3,
ins3,
nee3,
see3,
sei3,
sen3,
sin3,
2 letter words:
ef5,
fe5,
if5,
en2,
es2,
in2,
is2,
ne2,
si2,