6 letter words:
foison9,
inions6,
onions6,
5 letter words:
finis8,
finos8,
foins8,
infos8,
bison7,
boons7,
boson7,
inion5,
noons5,
onion5,
4 letter words:
fibs9,
fobs9,
fino7,
fins7,
foin7,
fons7,
info7,
bins6,
bios6,
boon6,
boos6,
ibis6,
nibs6,
nobs6,
obis6,
snib6,
snob6,
inns4,
ions4,
nisi4,
noon4,
onos4,
soon4,
3 letter words:
fib8,
fob8,
fin6,
fon6,
ifs6,
bin5,
bio5,
bis5,
boo5,
bos5,
nib5,
nob5,
obi5,
sib5,
sob5,
inn3,
ins3,
ion3,
noo3,
nos3,
ono3,
ons3,
sin3,
son3,
2 letter words:
if5,
of5,
bi4,
bo4,
in2,
is2,
no2,
oi2,
on2,
os2,
si2,
so2,