7 letter words:
postbox18,
5 letter words:
boost7,
boots7,
poots7,
spoot7,
stoop7,
topos7,
4 letter words:
bops8,
boos6,
boot6,
bots6,
obos6,
oops6,
opts6,
poos6,
poot6,
post6,
pots6,
soop6,
spot6,
stob6,
stop6,
topo6,
tops6,
oots4,
soot4,
3 letter words:
box12,
pox12,
oxo10,
sox10,
bop7,
boo5,
bos5,
bot5,
obo5,
obs5,
oop5,
ops5,
opt5,
poo5,
pos5,
pot5,
pst5,
sob5,
sop5,
top5,
oos3,
oot3,
sot3,
too3,
2 letter words:
ox9,
bo4,
ob4,
op4,
po4,
oo2,
os2,
so2,
st2,
to2,
