5 letter words:
swirl8,
birls7,
blurs7,
burls7,
libri7,
slurb7,
4 letter words:
iwis7,
birl6,
blur6,
bris6,
burl6,
burs6,
ibis6,
libs6,
ribs6,
rubs6,
slub6,
urbs6,
iris4,
liri4,
slur4,
3 letter words:
wiz15,
biz14,
wis6,
bis5,
bur5,
bus5,
lib5,
rib5,
rub5,
sib5,
sub5,
urb5,
lis3,
sir3,
sri3,
2 letter words:
bi4,
is2,
li2,
si2,
us2,