7 letter words:
fifteen13,
6 letter words:
toffee12,
ethion9,
theine9,
5 letter words:
fifth14,
foehn11,
thief11,
feint8,
often8,
thein8,
thine8,
4 letter words:
fief10,
fife10,
fohn10,
heft10,
teff10,
tiff10,
toff10,
feet7,
fete7,
fine7,
fino7,
foin7,
font7,
hent7,
hint7,
hone7,
info7,
neif7,
thee7,
then7,
thin7,
thio7,
into4,
nite4,
note4,
teen4,
tine4,
tone4,
3 letter words:
eff9,
feh9,
foh9,
iff9,
off9,
eft6,
eth6,
fee6,
fen6,
fet6,
fie6,
fin6,
fit6,
foe6,
fon6,
hen6,
het6,
hie6,
hin6,
hit6,
hoe6,
hon6,
hot6,
noh6,
nth6,
oft6,
the6,
tho6,
eon3,
ion3,
nee3,
net3,
nit3,
not3,
one3,
tee3,
ten3,
tie3,
tin3,
toe3,
ton3,
2 letter words:
ef5,
eh5,
fe5,
he5,
hi5,
ho5,
if5,
of5,
oh5,
en2,
et2,
in2,
it2,
ne2,
no2,
oe2,
oi2,
on2,
ti2,
to2,