10 letter words:
phonograph21,
7 letter words:
harpoon12,
6 letter words:
gonoph12,
hoorah12,
orphan11,
5 letter words:
graph11,
horah11,
phang11,
phono10,
apoop9,
appro9,
hogan9,
honor8,
pargo8,
ponga8,
pongo8,
prang8,
prong8,
apron7,
napoo7,
porno7,
argon6,
groan6,
nagor6,
orang6,
organ6,
4 letter words:
phoh12,
hogh11,
hoha10,
harp9,
hoop9,
opah9,
phon9,
pooh9,
hang8,
hong8,
oppo8,
parp8,
poop8,
prop8,
gapo7,
goop7,
gorp7,
harn7,
haro7,
hoar7,
hoon7,
hora7,
horn7,
noah7,
pang7,
pogo7,
pong7,
prog7,
noop6,
poon6,
poor6,
porn6,
prao6,
proa6,
proo6,
roop6,
agon5,
gnar5,
goon5,
goor5,
gora5,
gran5,
rang5,
rong5,
roan4,
roon4,
3 letter words:
hah9,
hoh9,
hap8,
hop8,
pah8,
pho8,
poh8,
app7,
hag7,
hog7,
pap7,
pop7,
gap6,
han6,
hao6,
hoa6,
hon6,
hoo6,
nah6,
noh6,
oho6,
ooh6,
rah6,
rho6,
apo5,
nap5,
oop5,
pan5,
par5,
poa5,
poo5,
pro5,
rap5,
ago4,
gan4,
gar4,
goa4,
gon4,
goo4,
gor4,
nag4,
nog4,
rag4,
noo3,
nor3,
oar3,
ono3,
oon3,
oor3,
ora3,
ran3,
roo3,
2 letter words:
ah5,
ha5,
ho5,
oh5,
op4,
pa4,
po4,
ag3,
go3,
an2,
ar2,
na2,
no2,
on2,
oo2,
or2,