7 letter words:
nappier11,
6 letter words:
napper10,
nappie10,
nipper10,
rappen10,
panier8,
rapine8,
5 letter words:
nappe9,
paper9,
piper9,
arpen7,
repin7,
ripen7,
4 letter words:
perp8,
pipe8,
prep8,
repp8,
aper6,
nape6,
neap6,
nipa6,
pain6,
pair6,
pane6,
pare6,
pean6,
pear6,
pein6,
peri6,
pian6,
pier6,
pina6,
pine6,
pirn6,
rape6,
reap6,
ripe6,
airn4,
earn4,
near4,
rain4,
rani4,
rein4,
3 letter words:
app7,
pap7,
pep7,
pip7,
ape5,
nap5,
nip5,
pan5,
par5,
pea5,
pen5,
per5,
pia5,
pie5,
pin5,
rap5,
rep5,
rip5,
ain3,
air3,
ane3,
ani3,
are3,
ear3,
era3,
ern3,
ire3,
nae3,
rai3,
ran3,
rei3,
ria3,
rin3,
2 letter words:
pa4,
pe4,
pi4,
ae2,
ai2,
an2,
ar2,
en2,
er2,
in2,
na2,
ne2,
re2,