6 letter words:
scrubs10,
crisis8,
5 letter words:
cribs9,
curbs9,
scrub9,
briss7,
risus5,
4 letter words:
crib8,
cubs8,
curb8,
bris6,
burs6,
buss6,
cris6,
crus6,
curs6,
cuss6,
ibis6,
ribs6,
rubs6,
sibs6,
sics6,
subs6,
urbs6,
uric6,
iris4,
sirs4,
sris4,
3 letter words:
cub7,
bis5,
bur5,
bus5,
cis5,
cru5,
cur5,
rib5,
rub5,
sib5,
sic5,
sub5,
urb5,
sir3,
sis3,
sri3,
2 letter words:
bi4,
is2,
si2,
us2,