7 letter words:
rebuses9,
subsere9,
6 letter words:
burses8,
subers8,
reuses6,
ureses6,
5 letter words:
beers7,
beres7,
beses7,
brees7,
burse7,
buses7,
rebus7,
rubes7,
suber7,
erses5,
reses5,
reuse5,
ruses5,
russe5,
seers5,
seres5,
suers5,
sures5,
users5,
4 letter words:
beer6,
bees6,
bere6,
bree6,
brus6,
burs6,
buss6,
rebs6,
rube6,
rubs6,
subs6,
urbs6,
eres4,
eses4,
esse4,
rees4,
rues4,
ruse4,
seer4,
sees4,
sere4,
sers4,
sese4,
suer4,
sues4,
sure4,
ures4,
user4,
uses4,
3 letter words:
bee5,
bes5,
bru5,
bur5,
bus5,
reb5,
rub5,
sub5,
urb5,
ere3,
ers3,
ess3,
ree3,
res3,
rue3,
see3,
ser3,
sue3,
sur3,
sus3,
ure3,
use3,
2 letter words:
be4,
ee2,
er2,
es2,
re2,
ur2,
us2,