•  Plural by adding –s or changing –f into –ves
• Plural by changing –f or –fe into –ves

Singular	Plural		Singular	Plural
belief	beliefs		gulf	gulfs
bluff	bluffs		handcuff	handcuffs
chef	chefs		reef	reefs
chief	chiefs		roof	roofs
cliff	cliffs		safe	safes
giraffe	giraffes		sheriff	sheriffs

• Plural by adding –s or changing –f into –ves
• Plural by changing –f or –fe into –ves