7 letter words:
furbish15,
6 letter words:
hubris11,
5 letter words:
frush11,
brush10,
buhrs10,
fribs10,
shrub10,
shiur8,
4 letter words:
fish10,
bish9,
buhr9,
bush9,
fibs9,
frib9,
fubs9,
hubs9,
firs7,
fris7,
furs7,
huis7,
rhus7,
rifs7,
rush7,
shir7,
shri7,
surf7,
bris6,
brus6,
burs6,
ribs6,
rubs6,
urbs6,
3 letter words:
fib8,
fub8,
hub8,
fir6,
fur6,
his6,
hui6,
ifs6,
ish6,
rif6,
sif6,
bis5,
bru5,
bur5,
bus5,
rib5,
rub5,
sib5,
sub5,
urb5,
sir3,
sri3,
sui3,
sur3,
2 letter words:
hi5,
if5,
sh5,
uh5,
bi4,
is2,
si2,
ur2,
us2,
