7 letter words:
effered14,
6 letter words:
deffer13,
reffed13,
effere12,
feeder10,
feered10,
reefed10,
refeed10,
5 letter words:
effed12,
defer9,
freed9,
refed9,
deere6,
reede6,
4 letter words:
feed8,
feer7,
fere7,
free7,
reef7,
deer5,
dere5,
dree5,
ered5,
rede5,
reed5,
3 letter words:
eff9,
def7,
fed7,
erf6,
fee6,
fer6,
ref6,
dee4,
red4,
ere3,
ree3,
2 letter words:
ef5,
fe5,
de3,
ed3,
ee2,
er2,
re2,