9 letter words:
happening17,
7 letter words:
happing15,
heaping13,
genipap12,
napping12,
neaping10,
peaning10,
6 letter words:
happen13,
hippen13,
pigpen11,
pipage11,
haeing10,
nappie10,
naping9,
pangen9,
paning9,
penang9,
pening9,
pinang9,
pennia8,
pinnae8,
eaning7,
innage7,
5 letter words:
phage11,
phang11,
ahing9,
anigh9,
ehing9,
hangi9,
hinge9,
nappe9,
neigh9,
aping8,
genip8,
henna8,
panne7,
penna7,
penni7,
pinna7,
ingan6,
inane5,
4 letter words:
pegh10,
epha9,
heap9,
hang8,
hing8,
nigh8,
pape8,
pipa8,
pipe8,
gape7,
haen7,
hain7,
page7,
pang7,
peag7,
ping7,
nape6,
neap6,
nipa6,
pain6,
pane6,
pean6,
pein6,
peni6,
pian6,
pina6,
pine6,
agen5,
agin5,
gaen5,
gain5,
gane5,
gean5,
gena5,
gien5,
ginn5,
aine4,
eina4,
nain4,
nane4,
nine4,
3 letter words:
hap8,
hep8,
hip8,
pah8,
peh8,
phi8,
app7,
ghi7,
hag7,
pap7,
pep7,
pip7,
ahi6,
gap6,
gip6,
hae6,
han6,
hen6,
hie6,
hin6,
nah6,
peg6,
pig6,
ape5,
nap5,
nep5,
nip5,
pan5,
pea5,
pen5,
pia5,
pie5,
pin5,
age4,
eng4,
gae4,
gan4,
gen4,
gie4,
gin4,
nag4,
neg4,
ain3,
ane3,
ani3,
ann3,
ean3,
inn3,
nae3,
nan3,
nie3,
2 letter words:
ah5,
eh5,
ha5,
he5,
hi5,
pa4,
pe4,
pi4,
ag3,
gi3,
ae2,
ai2,
an2,
ea2,
en2,
in2,
na2,
ne2,