7 letter words:
fifteen13,
feinter10,
inepter9,
6 letter words:
effeir12,
infeft12,
niffer12,
perfet11,
perfin11,
preife11,
priefe11,
enfire9,
feerin9,
ferine9,
fineer9,
infere9,
refine9,
nipter8,
pterin8,
repent8,
repine8,
entire6,
nerite6,
retine6,
triene6,
5 letter words:
fifer11,
triff11,
preif10,
prief10,
feint8,
fient8,
fiere8,
finer8,
freet8,
freit8,
infer8,
refit8,
rifte8,
terfe8,
treif8,
inept7,
neper7,
nepit7,
penie7,
peter7,
petre7,
piert7,
preen7,
prent7,
print7,
repin7,
ripen7,
tripe7,
enter5,
inert5,
inter5,
niter5,
nitre5,
rente5,
retie5,
terne5,
treen5,
trine5,
4 letter words:
pfft12,
fief10,
fife10,
niff10,
riff10,
teff10,
tiff10,
feen7,
feer7,
feet7,
feni7,
fent7,
fere7,
fern7,
fete7,
fier7,
fine7,
fire7,
firn7,
free7,
fret7,
frit7,
neif7,
nief7,
nife7,
reef7,
reft7,
reif7,
rife7,
rift7,
terf7,
tref7,
neep6,
peen6,
peer6,
pein6,
pene6,
peni6,
pent6,
pere6,
peri6,
pern6,
pert6,
pier6,
piet6,
pine6,
pint6,
pirn6,
pree6,
ripe6,
ript6,
trip6,
eine4,
erne4,
eten4,
nete4,
nite4,
reen4,
rein4,
rent4,
rete4,
rine4,
rite4,
teen4,
teer4,
tene4,
tern4,
tier4,
tine4,
tire4,
tree4,
trie4,
trin4,
3 letter words:
eff9,
iff9,
eft6,
erf6,
fee6,
fen6,
fer6,
fet6,
fie6,
fin6,
fir6,
fit6,
nef6,
ref6,
rif6,
tef6,
nep5,
nip5,
pee5,
pen5,
per5,
pet5,
pie5,
pin5,
pir5,
pit5,
pre5,
rep5,
rip5,
tip5,
een3,
ene3,
ere3,
ern3,
ire3,
nee3,
net3,
nie3,
nit3,
ree3,
rei3,
ren3,
ret3,
rin3,
rit3,
tee3,
ten3,
tie3,
tin3,
2 letter words:
ef5,
fe5,
if5,
pe4,
pi4,
ee2,
en2,
er2,
et2,
in2,
it2,
ne2,
re2,
te2,
ti2,