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