7 letter words:
cuprums13,
6 letter words:
crumps12,
cuprum12,
rumpus10,
5 letter words:
crump11,
mucus9,
rumps9,
scrum9,
usurp7,
4 letter words:
cups8,
cusp8,
rump8,
scum8,
scup8,
sump8,
umps8,
crus6,
curs6,
purs6,
rums6,
spur6,
urps6,
urus4,
3 letter words:
cum7,
cup7,
ump7,
cru5,
cur5,
mus5,
pur5,
pus5,
rum5,
sum5,
sup5,
ups5,
urp5,
2 letter words:
mu4,
um4,
up4,
us2,