8 letter words:
gunpaper13,
6 letter words:
napper10,
pauper10,
rappen10,
repugn9,
5 letter words:
nappe9,
paper9,
pupae9,
upper9,
gaper8,
grape8,
pager8,
parge8,
prang8,
purge8,
unpeg8,
arpen7,
pareu7,
prune7,
anger6,
argue6,
auger6,
genua6,
range6,
regna6,
rugae6,
4 letter words:
perp8,
prep8,
pupa8,
repp8,
gape7,
page7,
pang7,
peag7,
pung7,
aper6,
nape6,
neap6,
pane6,
pare6,
pean6,
pear6,
prau6,
puna6,
pure6,
rape6,
reap6,
ager5,
ague5,
gaen5,
gane5,
gaun5,
gaur5,
gear5,
genu5,
gnar5,
gran5,
grue5,
guan5,
guar5,
rage5,
rang5,
ruga5,
rung5,
urge5,
earn4,
near4,
rune4,
urea4,
3 letter words:
app7,
pap7,
pep7,
pup7,
gap6,
peg6,
pug6,
ape5,
nap5,
pan5,
par5,
pea5,
pen5,
per5,
pun5,
pur5,
rap5,
rep5,
urp5,
age4,
eng4,
erg4,
gae4,
gan4,
gar4,
gen4,
gnu4,
gun4,
nag4,
neg4,
rag4,
reg4,
rug4,
ane3,
are3,
ear3,
eau3,
era3,
ern3,
nae3,
ran3,
rue3,
run3,
urn3,
2 letter words:
pa4,
pe4,
up4,
ag3,
ae2,
an2,
ar2,
en2,
er2,
na2,
ne2,
nu2,
re2,
un2,