7 letter words:
postbox18,
6 letter words:
robots8,
troops8,
5 letter words:
boors7,
boost7,
boots7,
borts7,
broos7,
ports7,
proso7,
prost7,
robot7,
sopor7,
spoor7,
sport7,
stoop7,
strop7,
topos7,
troop7,
roost5,
roots5,
rotos5,
toros5,
torso5,
4 letter words:
bops8,
boor6,
boos6,
boot6,
bort6,
bots6,
broo6,
bros6,
oops6,
opts6,
orbs6,
poor6,
poos6,
port6,
post6,
pots6,
pros6,
robs6,
sorb6,
spot6,
stob6,
stop6,
topo6,
tops6,
trop6,
oots4,
orts4,
root4,
roto4,
rots4,
soot4,
sort4,
toro4,
tors4,
3 letter words:
box12,
pox12,
oxo10,
sox10,
bop7,
boo5,
bos5,
bot5,
bro5,
ops5,
opt5,
orb5,
poo5,
pot5,
pro5,
pst5,
rob5,
sob5,
sop5,
top5,
oot3,
ors3,
ort3,
rot3,
sot3,
too3,
tor3,
2 letter words:
ox9,
bo4,
op4,
or2,
os2,
so2,
to2,