8 letter words:
arborous10,
7 letter words:
arbours9,
soroban9,
6 letter words:
arbors8,
arbour8,
barons8,
borons8,
bourns8,
burans8,
buroos8,
burros8,
bursar8,
rurban8,
suborn8,
unbars8,
5 letter words:
aboon7,
arbor7,
barns7,
baron7,
barro7,
bason7,
baurs7,
boars7,
bonus7,
boons7,
boors7,
boras7,
borna7,
boron7,
boson7,
bosun7,
bouns7,
bourn7,
brans7,
broos7,
bunas7,
buran7,
buras7,
burns7,
buroo7,
burro7,
burrs7,
bursa7,
sorbo7,
unbar7,
urban7,
arson5,
nurrs5,
rauns5,
roans5,
roars5,
roons5,
roosa5,
sonar5,
sorra5,
surra5,
uraos5,
urson5,
4 letter words:
abos6,
arbs6,
bans6,
barn6,
bars6,
baur6,
boar6,
boas6,
bona6,
boon6,
boor6,
boos6,
bora6,
born6,
bors6,
boun6,
bran6,
bras6,
broo6,
bros6,
brus6,
buna6,
buns6,
bura6,
burn6,
burr6,
burs6,
nabs6,
nobs6,
nubs6,
obas6,
obos6,
orbs6,
robs6,
rubs6,
snab6,
snob6,
snub6,
soba6,
sorb6,
suba6,
urbs6,
anus4,
naos4,
nous4,
nurr4,
nurs4,
oars4,
onos4,
onus4,
oons4,
orra4,
osar4,
ourn4,
ours4,
raun4,
roan4,
roar4,
roon4,
roos4,
runs4,
rusa4,
snar4,
soar4,
soon4,
sora4,
sorn4,
sour4,
sura4,
urao4,
urns4,
ursa4,
3 letter words:
abo5,
abs5,
arb5,
ban5,
bar5,
bas5,
boa5,
bon5,
boo5,
bor5,
bos5,
bra5,
bro5,
brr5,
bru5,
bun5,
bur5,
bus5,
nab5,
nob5,
nub5,
oba5,
obo5,
obs5,
orb5,
rob5,
rub5,
sab5,
sob5,
sub5,
urb5,
ars3,
nas3,
noo3,
nor3,
nos3,
nur3,
nus3,
oar3,
ono3,
ons3,
oon3,
oor3,
oos3,
ora3,
ors3,
our3,
ous3,
ran3,
ras3,
roo3,
run3,
san3,
sar3,
sau3,
son3,
sou3,
sun3,
sur3,
uns3,
urn3,
2 letter words:
ab4,
ba4,
bo4,
ob4,
an2,
ar2,
as2,
na2,
no2,
nu2,
on2,
oo2,
or2,
os2,
ou2,
so2,
un2,
ur2,
us2,