7 letter words:
hurtful13,
ruthful13,
5 letter words:
dutch11,
churl10,
lurch10,
thurl8,
4 letter words:
curf9,
thud8,
crud7,
curd7,
duct7,
furl7,
hurl7,
hurt7,
ruth7,
thru7,
turf7,
cult6,
curl6,
curt6,
turd5,
3 letter words:
duh7,
fud7,
cud6,
flu6,
fur6,
hut6,
cru5,
cur5,
cut5,
urd4,
rut3,
ulu3,
2 letter words:
uh5,
ut2,