5 letter words:
boars7,
boras7,
buras7,
bursa7,
4 letter words:
abos6,
arbs6,
bars6,
boar6,
boas6,
bora6,
bras6,
bros6,
bura6,
burs6,
obas6,
orbs6,
robs6,
rubs6,
soba6,
sorb6,
suba6,
urbs6,
oars4,
osar4,
ours4,
soar4,
sora4,
sour4,
sura4,
ursa4,
3 letter words:
abo5,
abs5,
arb5,
bar5,
bas5,
boa5,
bos5,
bra5,
bro5,
bur5,
bus5,
oba5,
orb5,
rob5,
rub5,
sab5,
sob5,
sub5,
urb5,
ars3,
oar3,
ora3,
ors3,
our3,
ras3,
sau3,
sou3,
2 letter words:
ab4,
ba4,
bo4,
ar2,
as2,
or2,
os2,
so2,
us2,