9 letter words:
peneplane13,
7 letter words:
enplane9,
6 letter words:
alpeen8,
pennae8,
pennal8,
5 letter words:
appel9,
apple9,
nappe9,
peepe9,
pepla9,
elpee7,
panel7,
panne7,
penal7,
penna7,
penne7,
plane7,
plena7,
anele5,
neele5,
4 letter words:
palp8,
pape8,
peep8,
plap8,
epee6,
leap6,
leep6,
nape6,
neap6,
neep6,
pale6,
pane6,
peal6,
pean6,
peel6,
peen6,
pela6,
pele6,
pene6,
plan6,
plea6,
alee4,
eale4,
elan4,
lane4,
lean4,
nane4,
neal4,
nene4,
3 letter words:
app7,
pap7,
pep7,
alp5,
ape5,
lap5,
lep5,
nap5,
nep5,
pal5,
pan5,
pea5,
pee5,
pen5,
ale3,
ane3,
ann3,
ean3,
eel3,
een3,
ene3,
lea3,
lee3,
nae3,
nan3,
nee3,
2 letter words:
pa4,
pe4,
ae2,
al2,
an2,
ea2,
ee2,
el2,
en2,
la2,
na2,
ne2,