add "s" -- or "es" ?
blocks
baby
babies
elf
hero
heroes
man
men
roll
rolls
city
cities
wolves
tomato
child
children
fox
foxes
puppy
puppies
hoof
hooves
potato
potatoes
deer
deer
wish
wishes
monkey
monkeysbabies
cliff
cliffs
zoo
zoos
moose
moose
batch
batches
play
plays
roof
roofs
video
videos