6 letter words:
perfet11,
5 letter words:
kreep11,
terek9,
freet8,
terfe8,
peter7,
petre7,
4 letter words:
keef11,
kerf11,
keep10,
kept10,
peek10,
peke10,
perk10,
keet8,
kete8,
reek8,
reke8,
teek8,
trek8,
feer7,
feet7,
fere7,
fete7,
free7,
fret7,
reef7,
reft7,
terf7,
tref7,
peer6,
pere6,
pert6,
pree6,
rete4,
teer4,
tree4,
3 letter words:
kef10,
kep9,
eek7,
eke7,
erk7,
ket7,
eft6,
erf6,
fee6,
fer6,
fet6,
ref6,
tef6,
pee5,
per5,
pet5,
pre5,
rep5,
ere3,
ree3,
ret3,
tee3,
2 letter words:
ef5,
fe5,
pe4,
ee2,
er2,
et2,
re2,
te2,