a foot
feet
a boy
boys
a dictionary
dictionaries
a leaf
leaves
a potato
potatoes
a butterfly
butterflies
a toothbrush
toothbrushes
a monkey
monkeys
a goose
geese
a wolf
wolves
a tomato
tomatoes
a child
children
a tooth
teeth
a woman
women
a mouse
mice
a policeman
policemen
a knife
knives
a bus
buses
a reindeer
reindeer
a strawberry
strawberries
a sheep
sheep