7 letter words:
chiffon18,
6 letter words:
coffin14,
5 letter words:
finch13,
chino10,
4 letter words:
coff12,
fohn10,
chin9,
chon9,
coif9,
fico9,
foci9,
inch9,
fino7,
foin7,
info7,
cion6,
coin6,
coni6,
icon6,
3 letter words:
foh9,
iff9,
off9,
chi8,
hic8,
ich8,
fin6,
fon6,
hin6,
hon6,
noh6,
con5,
ion3,
2 letter words:
hi5,
ho5,
if5,
of5,
oh5,
in2,
no2,
oi2,
on2,