6	ductus	6	cultus
5	ducts	5	cults
4	ulus	4	sulu
4	stud	4	scut
4	scud	4	lust
4	luds	4	dust
4	duct	4	cuts
4	cult	4	cuds
3	uts	3	ulu
3	ult	3	lud
3	lsd	3	cut
3	cud	2	ut
2	us