6 letter words:
forint9,
5 letter words:
front8,
intro5,
nitro5,
nooit5,
roton5,
4 letter words:
fino7,
firn7,
foin7,
font7,
foot7,
fort7,
frit7,
info7,
rift7,
roof7,
inro4,
into4,
iron4,
noir4,
nori4,
oint4,
onto4,
oont4,
riot4,
roin4,
ront4,
roon4,
root4,
roti4,
roto4,
tiro4,
toon4,
tori4,
torn4,
toro4,
trin4,
trio4,
tron4,
3 letter words:
fin6,
fir6,
fit6,
fon6,
for6,
fro6,
oft6,
oof6,
orf6,
rif6,
ion3,
nit3,
noo3,
nor3,
not3,
ono3,
oon3,
oor3,
oot3,
ort3,
rin3,
rit3,
roo3,
rot3,
tin3,
ton3,
too3,
tor3,
2 letter words:
if5,
of5,
in2,
io2,
it2,
no2,
oi2,
on2,
oo2,
or2,
ti2,
to2,