wife
wives
knife
knives
matrix
matrices
half
halves
thesis
theses
fish
fish
oasis
oases
medium
media
hypothesis
hypotheses
ox
oxen
moose
moose
mouse
mice
axis
axes
cactus
cacti
alumnus
alumni
radius
radii
woman
women
child
children
wolf
wolves
goose
geese
foot
feet
person
people
analysis
analyses
deer
deer
life
lives
tooth
teeth
self
selves
appendix
appendices
elf
elves
fungus
fungi
sheep
sheep
scarf
scarves
man
men
index
indeces
leaf
leaves
loaf
loaves
die
dice
quiz
quizzes