7 letter words:
rubious9,
5 letter words:
bowrs10,
brows10,
biros7,
brios7,
rubus7,
4 letter words:
bowr9,
bows9,
brow9,
swob9,
rows7,
bios6,
biro6,
bois6,
bors6,
brio6,
bris6,
bros6,
brus6,
burs6,
obis6,
orbs6,
ribs6,
robs6,
rubs6,
sorb6,
urbs6,
ours4,
sori4,
sour4,
urus4,
3 letter words:
bow8,
row6,
sow6,
wis6,
wos6,
wus6,
bio5,
bis5,
boi5,
bor5,
bos5,
bro5,
bru5,
bur5,
bus5,
obi5,
obs5,
orb5,
rib5,
rob5,
rub5,
sib5,
sob5,
sub5,
urb5,
ios3,
iso3,
ors3,
our3,
ous3,
sir3,
sou3,
sri3,
sui3,
sur3,
2 letter words:
ow5,
wo5,
bi4,
bo4,
ob4,
io2,
is2,
oi2,
or2,
os2,
ou2,
si2,
so2,
ur2,
us2,