5 letter words:
burps9,
pubis9,
biros7,
brios7,
pious7,
pours7,
puris7,
roups7,
sirup7,
4 letter words:
bops8,
burp8,
pubs8,
bios6,
biro6,
brio6,
bris6,
bros6,
burs6,
obis6,
opus6,
orbs6,
piso6,
pois6,
pour6,
pros6,
puri6,
purs6,
ribs6,
rips6,
robs6,
roup6,
rubs6,
sorb6,
soup6,
spur6,
urbs6,
urps6,
ours4,
sori4,
sour4,
3 letter words:
bop7,
pub7,
bio5,
bis5,
bos5,
bro5,
bur5,
bus5,
obi5,
ops5,
orb5,
pis5,
piu5,
poi5,
pro5,
psi5,
pur5,
pus5,
rib5,
rip5,
rob5,
rub5,
sib5,
sip5,
sob5,
sop5,
sub5,
sup5,
upo5,
ups5,
urb5,
urp5,
ors3,
our3,
sir3,
sou3,
sri3,
2 letter words:
bi4,
bo4,
op4,
pi4,
up4,
is2,
oi2,
or2,
os2,
si2,
so2,
us2,