6 letter words:
airbus8,
urbias8,
5 letter words:
abris7,
buras7,
bursa7,
sabir7,
sabra7,
urbia7,
arias5,
auras5,
auris5,
raias5,
4 letter words:
abas6,
abri6,
arbs6,
baas6,
bars6,
bias6,
bras6,
bris6,
bura6,
burs6,
isba6,
ribs6,
rubs6,
suba6,
urbs6,
airs4,
aria4,
aura4,
raia4,
rais4,
rias4,
sari4,
sura4,
ursa4,
3 letter words:
aba5,
abs5,
arb5,
baa5,
bar5,
bas5,
bis5,
bra5,
bur5,
bus5,
rib5,
rub5,
sab5,
sib5,
sub5,
urb5,
aas3,
air3,
ais3,
ars3,
rai3,
ras3,
ria3,
sau3,
sir3,
sri3,
2 letter words:
ab4,
ba4,
bi4,
aa2,
ai2,
ar2,
as2,
is2,
si2,
us2,