tooth
teeth
moose
moose
self
selves
scarf
scarves
ox
oxen
person
people
mouse
mice
nucleus
nuclei
deer
deer
quiz
quizzes
half
halves
child
children
knife
knives
die
dice
cactus
cacti
woman
women
life
lives
man
men
elf
elves
foot
feet
wolf
wolves
leaf
leaves
sheep
sheep
fish
fish
wife
wives
fungus
fungi
loaf
loaves
goose
geese