singular nouns to plural nouns
animal
animals
students
student
goose
geese
deer
deer
nut
nuts
backs
back
elf
elves
knives
knife
child
children
bench
benches
legs
leg
man
men
teeth
tooth
baby
babies
toy
toys
personalities
personality
fish
fish
scarves
scarf
moose
moose
fly
flies
classes
class
cactus
cacti
feet
foot
mouse
mice