10 letter words:
preference17,
9 letter words:
reference14,
7 letter words:
refence12,
creeper11,
referee10,
preener9,
6 letter words:
fencer11,
prefer11,
percen10,
enfree9,
reefer9,
5 letter words:
fence10,
creep9,
crepe9,
peece9,
pence9,
perce9,
ferer8,
freer8,
frere8,
refer8,
cerne7,
neper7,
preen7,
4 letter words:
cepe8,
feen7,
feer7,
fere7,
fern7,
free7,
reef7,
cere6,
cree6,
epee6,
neep6,
peen6,
peer6,
pene6,
pere6,
pern6,
pree6,
erne4,
reen4,
3 letter words:
cep7,
pec7,
erf6,
fee6,
fen6,
fer6,
nef6,
ref6,
cee5,
nep5,
pee5,
pen5,
per5,
pre5,
rec5,
rep5,
een3,
ene3,
ere3,
ern3,
err3,
nee3,
ree3,
ren3,
2 letter words:
ef5,
fe5,
pe4,
ee2,
en2,
er2,
ne2,
re2,
