6 letter words:
ionize15,
4 letter words:
ziff19,
zein13,
zine13,
zone13,
fief10,
fife10,
fifi10,
niff10,
feni7,
fine7,
fini7,
fino7,
foen7,
foin7,
fone7,
info7,
neif7,
nief7,
nife7,
onie4,
3 letter words:
fez15,
fiz15,
zin12,
eff9,
iff9,
off9,
fen6,
fie6,
fin6,
foe6,
fon6,
nef6,
eon3,
ion3,
nie3,
one3,
2 letter words:
zo11,
ef5,
fe5,
if5,
of5,
en2,
in2,
io2,
ne2,
no2,
oe2,
oi2,
on2,