6 letter words:
aburst8,
5 letter words:
abuts7,
baurs7,
brast7,
brats7,
brust7,
bruts7,
buats7,
buras7,
bursa7,
burst7,
tabus7,
trabs7,
tsuba7,
tubar7,
tubas7,
ratus5,
surat5,
sutra5,
4 letter words:
abut6,
arbs6,
bars6,
bast6,
bats6,
baur6,
bras6,
brat6,
brus6,
brut6,
buat6,
bura6,
burs6,
bust6,
buts6,
rubs6,
stab6,
stub6,
suba6,
tabs6,
tabu6,
tuba6,
tubs6,
urbs6,
arts4,
rast4,
rats4,
ratu4,
rusa4,
rust4,
ruts4,
saut4,
star4,
sura4,
tars4,
taus4,
tsar4,
ursa4,
utas4,
3 letter words:
abs5,
arb5,
bar5,
bas5,
bat5,
bra5,
bru5,
bur5,
bus5,
but5,
rub5,
sab5,
sub5,
tab5,
tub5,
urb5,
ars3,
art3,
ras3,
rat3,
rut3,
sar3,
sat3,
sau3,
sur3,
tar3,
tas3,
tau3,
uta3,
uts3,
2 letter words:
ab4,
ba4,
ar2,
as2,
at2,
st2,
ta2,
ur2,
us2,
ut2,