5 letter words:
apnea7,
paean7,
panne7,
penna7,
unpen7,
4 letter words:
napa6,
nape6,
neap6,
pane6,
pean6,
puna6,
anna4,
naan4,
nana4,
3 letter words:
ape5,
nap5,
pan5,
pea5,
pen5,
pun5,
ana3,
ane3,
eau3,
nae3,
nan3,
nun3,
2 letter words:
pa4,
pe4,
up4,
aa2,
ae2,
an2,
en2,
na2,
ne2,
nu2,
un2,