6 letter words:
airbus8,
urbias8,
5 letter words:
abris7,
baurs7,
buras7,
bursa7,
rabis7,
ribas7,
rubai7,
sabir7,
urbia7,
auris5,
4 letter words:
abri6,
arbs6,
bars6,
baur6,
bias6,
bras6,
bris6,
brus6,
bura6,
burs6,
ibis6,
isba6,
rabi6,
riba6,
ribs6,
rubs6,
suba6,
urbs6,
airs4,
aris4,
iris4,
rais4,
rias4,
rusa4,
sair4,
sari4,
siri4,
sura4,
ursa4,
3 letter words:
abs5,
arb5,
bar5,
bas5,
bis5,
bra5,
bru5,
bur5,
bus5,
rib5,
rub5,
sab5,
sib5,
sub5,
urb5,
air3,
ais3,
ars3,
rai3,
ras3,
ria3,
sai3,
sar3,
sau3,
sir3,
sri3,
sui3,
sur3,
2 letter words:
ab4,
ba4,
bi4,
ai2,
ar2,
as2,
is2,
si2,
ur2,
us2,