6 letter words:
gonoph12,
5 letter words:
phono10,
pongo8,
4 letter words:
hoop9,
phon9,
pooh9,
hong8,
goop7,
hoon7,
pogo7,
pong7,
noop6,
poon6,
goon5,
3 letter words:
hop8,
pho8,
poh8,
hog7,
hon6,
hoo6,
noh6,
oho6,
ooh6,
oop5,
poo5,
gon4,
goo4,
nog4,
noo3,
ono3,
oon3,
2 letter words:
ho5,
oh5,
op4,
po4,
go3,
no2,
on2,
oo2,
