6 letter words:
dieoff13,
5 letter words:
deffo12,
fifed12,
offed12,
4 letter words:
diff11,
doff11,
fief10,
fife10,
defi8,
deif8,
feod8,
fido8,
foid8,
3 letter words:
eff9,
iff9,
off9,
def7,
dif7,
dof7,
fed7,
fid7,
fie6,
foe6,
dei4,
die4,
doe4,
ide4,
ode4,
2 letter words:
ef5,
fe5,
if5,
of5,
de3,
di3,
do3,
ed3,
id3,
od3,
io2,
oe2,
oi2,