5 letter words:
butch12,
dutch11,
churl10,
lurch10,
thurl8,
blurt7,
4 letter words:
chub11,
bhut9,
buhl9,
buhr9,
club8,
curb8,
thud8,
burd7,
crud7,
curd7,
drub7,
duct7,
hurl7,
hurt7,
ruth7,
thru7,
blur6,
brut6,
burl6,
cult6,
curl6,
curt6,
turd5,
3 letter words:
hub8,
cub7,
duh7,
bud6,
cud6,
dub6,
hut6,
bur5,
but5,
cru5,
cur5,
cut5,
rub5,
tub5,
urb5,
urd4,
rut3,
ulu3,
2 letter words:
uh5,
ut2,