7 letter words:
niftier10,
unifier10,
repunit9,
6 letter words:
perfin11,
finite9,
turfen9,
euripi8,
nipter8,
periti8,
pinier8,
pinite8,
pirnie8,
pirnit8,
pitier8,
pituri8,
pruine8,
pterin8,
punier8,
punter8,
purine8,
tiepin8,
turnip8,
unripe8,
intire6,
tinier6,
triune6,
tunier6,
uniter6,
5 letter words:
preif10,
prief10,
feint8,
fient8,
finer8,
firie8,
freit8,
fruit8,
infer8,
refit8,
rifte8,
treif8,
unfit8,
erupt7,
inept7,
input7,
nepit7,
piert7,
prent7,
print7,
prune7,
prunt7,
purin7,
repin7,
ripen7,
tripe7,
unrip7,
upter7,
uptie7,
inert5,
inter5,
inure5,
niter5,
nitre5,
rutin5,
trine5,
tuner5,
unite5,
untie5,
urent5,
urine5,
urite5,
uteri5,
4 letter words:
pfui9,
enuf7,
feni7,
fent7,
fern7,
fier7,
fine7,
fini7,
fire7,
firn7,
fret7,
frit7,
neif7,
nief7,
nife7,
reft7,
reif7,
rife7,
rift7,
terf7,
tref7,
turf7,
pein6,
peni6,
pent6,
peri6,
pern6,
pert6,
pier6,
piet6,
pine6,
pint6,
pirn6,
ptui6,
puer6,
puir6,
punt6,
pure6,
puri6,
ripe6,
ript6,
tipi6,
trip6,
etui4,
inti4,
iure4,
nite4,
rein4,
rent4,
rine4,
rite4,
ruin4,
rune4,
runt4,
tern4,
tier4,
tine4,
tire4,
trie4,
trin4,
true4,
tune4,
turn4,
unit4,
3 letter words:
eft6,
erf6,
fen6,
fer6,
fet6,
feu6,
fie6,
fin6,
fir6,
fit6,
fun6,
fur6,
nef6,
ref6,
rif6,
tef6,
nep5,
nip5,
pen5,
per5,
pet5,
pie5,
pin5,
pir5,
pit5,
piu5,
pre5,
pun5,
pur5,
put5,
rep5,
rip5,
tip5,
tup5,
urp5,
ern3,
ire3,
net3,
nie3,
nit3,
nur3,
nut3,
rei3,
ren3,
ret3,
rin3,
rit3,
rue3,
run3,
rut3,
ten3,
tie3,
tin3,
tui3,
tun3,
uni3,
ure3,
urn3,
ute3,
2 letter words:
ef5,
fe5,
if5,
pe4,
pi4,
up4,
en2,
er2,
et2,
in2,
it2,
ne2,
nu2,
re2,
te2,
ti2,
un2,
ur2,
ut2,