A
gang
gangs
tongue
tongues
temple
temples
mango
mangoes
toy
toys
church
churches
box
boxes
process
processes
berry
berries
hero
heroes
elf
elves
half
halves
marsh
marshes
ox
oxen
mouse (animal)
mice
mouses
spokesperson
spokespersons / spokespeople
a bunch of keys
bunches of keys
quiz
quizzes
medium
datum
data
a loaf of bread
loaves of bread
reindeer
reindeer
series
series
goose
geese