8 letter words:
phosphin18,
7 letter words:
shippon14,
6 letter words:
hippos13,
popish13,
shippo13,
siphon11,
ippons10,
5 letter words:
phohs13,
hippo12,
phons10,
ippon9,
opsin7,
pions7,
psion7,
4 letter words:
phoh12,
hish10,
hohs10,
hips9,
hops9,
phis9,
phon9,
phos9,
pish9,
posh9,
ship9,
shop9,
soph9,
pips8,
pops8,
hins7,
hisn7,
hons7,
nish7,
nosh7,
shin7,
sinh7,
nips6,
pins6,
pion6,
piso6,
pois6,
pons6,
snip6,
spin6,
ions4,
3 letter words:
hoh9,
shh9,
hip8,
hop8,
phi8,
pho8,
poh8,
pip7,
pop7,
hin6,
his6,
hoi6,
hon6,
hos6,
ish6,
noh6,
ohs6,
soh6,
nip5,
ops5,
pin5,
pis5,
poi5,
pos5,
psi5,
sip5,
sop5,
ins3,
ion3,
ios3,
iso3,
nis3,
nos3,
ons3,
sin3,
son3,
2 letter words:
hi5,
ho5,
oh5,
sh5,
op4,
pi4,
po4,
in2,
io2,
is2,
no2,
oi2,
on2,
os2,
si2,
so2,
