7 letter words:
offered14,
6 letter words:
deffer13,
doffer13,
reffed13,
5 letter words:
deffo12,
effed12,
offed12,
offer11,
reffo11,
defer9,
freed9,
refed9,
doree6,
erode6,
4 letter words:
doff11,
feed8,
feod8,
ford8,
feer7,
fere7,
fore7,
free7,
froe7,
orfe7,
reef7,
deer5,
dere5,
dero5,
doer5,
dore5,
dree5,
ered5,
rede5,
redo5,
reed5,
rode5,
roed5,
3 letter words:
eff9,
off9,
def7,
dof7,
fed7,
erf6,
fee6,
fer6,
foe6,
for6,
fro6,
orf6,
ref6,
dee4,
doe4,
dor4,
ode4,
ord4,
red4,
rod4,
ere3,
ore3,
ree3,
reo3,
roe3,
2 letter words:
ef5,
fe5,
of5,
de3,
do3,
ed3,
od3,
ee2,
er2,
oe2,
or2,
re2,