5 letter words:
tophi10,
4 letter words:
hipt9,
phot9,
pith9,
toph9,
thio7,
topi6,
3 letter words:
hip8,
hop8,
phi8,
pho8,
pht8,
poh8,
hit6,
hoi6,
hot6,
tho6,
opt5,
pit5,
poi5,
pot5,
tip5,
top5,
2 letter words:
hi5,
ho5,
oh5,
op4,
pi4,
po4,
io2,
it2,
oi2,
ti2,
to2,