6 letter words:
pterin8,
repent8,
repine8,
entire6,
retine6,
triene6,
5 letter words:
inept7,
peter7,
preen7,
print7,
repin7,
ripen7,
tripe7,
enter5,
inert5,
inter5,
niter5,
nitre5,
rente5,
retie5,
terne5,
treen5,
trine5,
4 letter words:
neep6,
peen6,
peer6,
pein6,
pent6,
pere6,
peri6,
pert6,
pier6,
pine6,
pint6,
pirn6,
pree6,
ripe6,
trip6,
erne4,
nite4,
rein4,
rent4,
rete4,
rite4,
teen4,
tern4,
tier4,
tine4,
tire4,
tree4,
3 letter words:
nip5,
pee5,
pen5,
per5,
pet5,
pie5,
pin5,
pit5,
rep5,
rip5,
tip5,
ere3,
ern3,
ire3,
nee3,
net3,
nit3,
ree3,
rei3,
ret3,
rin3,
tee3,
ten3,
tie3,
tin3,
2 letter words:
pe4,
pi4,
en2,
er2,
et2,
in2,
it2,
ne2,
re2,
ti2,