9 letter words:
subshrubs16,
8 letter words:
subshrub15,
7 letter words:
suburbs11,
6 letter words:
shrubs11,
suburb10,
bussus8,
5 letter words:
brush10,
buhrs10,
shrub10,
bubus9,
burbs9,
bussu7,
rubus7,
susus5,
4 letter words:
buhr9,
bush9,
hubs9,
bubs8,
bubu8,
burb8,
huss7,
rhus7,
rush7,
brus6,
burs6,
buss6,
rubs6,
subs6,
urbs6,
suss4,
susu4,
urus4,
3 letter words:
hub8,
bub7,
bru5,
bur5,
bus5,
rub5,
sub5,
urb5,
sur3,
sus3,
2 letter words:
sh5,
uh5,
ur2,
us2,