12 letter words:
nonhappening20,
9 letter words:
happening17,
8 letter words:
hennaing12,
7 letter words:
happing15,
hopping15,
heaping13,
phoning13,
genipap12,
napping12,
opening10,
panning10,
penning10,
6 letter words:
happen13,
hoping12,
pigpen11,
pipage11,
haeing10,
hoagie10,
hoeing10,
honing10,
nappie10,
pepino10,
epigon9,
pangen9,
penang9,
pigeon9,
pinang9,
panino8,
pennia8,
pennon8,
pinnae8,
innage7,
nonage7,
eonian6,
nannie6,
5 letter words:
hippo12,
phage11,
phone10,
ahing9,
hinge9,
hogan9,
hongi9,
nappe9,
neigh9,
ohing9,
aping8,
genip8,
gipon8,
henna8,
honan8,
oping8,
pengo8,
pingo8,
opine7,
paeon7,
panne7,
penna7,
penni7,
piano7,
pinna7,
pinon7,
agone6,
genoa6,
gonia6,
anion5,
inane5,
ninon5,
4 letter words:
epha9,
heap9,
hope9,
opah9,
phon9,
hang8,
hong8,
nigh8,
pepo8,
pipe8,
pope8,
gape7,
haen7,
hone7,
ohia7,
page7,
pang7,
peag7,
ping7,
pong7,
nape6,
neap6,
nipa6,
nope6,
open6,
pain6,
pane6,
pean6,
pein6,
peon6,
pian6,
pina6,
pine6,
pion6,
pone6,
agin5,
agio5,
agon5,
gaen5,
gain5,
gane5,
gien5,
gone5,
aeon4,
anon4,
naoi4,
neon4,
nine4,
nona4,
none4,
3 letter words:
hap8,
hep8,
hip8,
hop8,
pah8,
peh8,
phi8,
poh8,
app7,
ghi7,
hag7,
hog7,
pap7,
pep7,
pip7,
pop7,
ahi6,
gap6,
gip6,
hae6,
hao6,
hen6,
hie6,
hin6,
hoe6,
hon6,
nah6,
noh6,
peg6,
pig6,
ape5,
apo5,
nap5,
nip5,
ope5,
pan5,
pea5,
pen5,
pia5,
pie5,
pin5,
poi5,
age4,
ago4,
ego4,
eng4,
gae4,
gan4,
gen4,
gie4,
gin4,
goa4,
nag4,
neg4,
nog4,
ain3,
ane3,
ani3,
eon3,
inn3,
ion3,
nae3,
nan3,
one3,
2 letter words:
ah5,
eh5,
ha5,
he5,
hi5,
ho5,
oh5,
op4,
pa4,
pe4,
pi4,
ag3,
go3,
ae2,
ai2,
an2,
en2,
in2,
na2,
ne2,
no2,
oe2,
oi2,
on2,
