11 letter words:
opprobrious17,
8 letter words:
subprior12,
7 letter words:
rooibos9,
6 letter words:
buroos8,
burros8,
pooris8,
porous8,
priors8,
sbirro8,
5 letter words:
burps9,
oppos9,
poops9,
probs9,
props9,
pubis9,
ripps9,
biros7,
birrs7,
boors7,
brios7,
broos7,
buroo7,
burro7,
burrs7,
pious7,
poori7,
pours7,
prior7,
proso7,
puris7,
purrs7,
roops7,
roups7,
rurps7,
sirup7,
sopor7,
sorbo7,
spoor7,
orris5,
4 letter words:
bops8,
burp8,
oppo8,
pips8,
poop8,
pops8,
prob8,
prop8,
pubs8,
pups8,
ripp8,
bios6,
biro6,
birr6,
bois6,
boor6,
boos6,
bors6,
brio6,
bris6,
broo6,
bros6,
brus6,
burr6,
burs6,
obis6,
obos6,
oops6,
opus6,
orbs6,
oups6,
pirs6,
piso6,
pois6,
poor6,
poos6,
pour6,
proo6,
pros6,
puir6,
puri6,
purr6,
purs6,
ribs6,
rips6,
risp6,
robs6,
roop6,
roup6,
rubs6,
rurp6,
soop6,
sorb6,
soup6,
spur6,
urbs6,
urps6,
ours4,
roos4,
sori4,
sour4,
3 letter words:
bop7,
pip7,
pop7,
pub7,
pup7,
bio5,
bis5,
boi5,
boo5,
bor5,
bos5,
bro5,
brr5,
bru5,
bur5,
bus5,
obi5,
obo5,
obs5,
oop5,
ops5,
orb5,
oup5,
pir5,
pis5,
piu5,
poi5,
poo5,
pos5,
pro5,
psi5,
pur5,
pus5,
rib5,
rip5,
rob5,
rub5,
sib5,
sip5,
sob5,
sop5,
sub5,
sup5,
upo5,
ups5,
urb5,
urp5,
ios3,
iso3,
oor3,
oos3,
ors3,
our3,
ous3,
roo3,
sir3,
sou3,
sri3,
sui3,
sur3,
2 letter words:
bi4,
bo4,
ob4,
op4,
pi4,
po4,
up4,
io2,
is2,
oi2,
oo2,
or2,
os2,
ou2,
si2,
so2,
ur2,
us2,