woman
women
foot
feet
thesis
theses
sheep
sheep
moose
moose
aircraft
aircraft
person
people
vertebra
vertebrae
analysis
analyses
elf
elves
self
selves
man
men
half
halves
series
series
salmon
salmon
scarf
scarves
medium
media
matrix
matrices
louse
lice
antenna
antennae
loaf
loaves
hypothesis
hypotheses
die
dice
tooth
teeth
mouse
mice
leaf
leaves
axis
axes
offspring
offspring
formula
formulae
goose
geese
bacterium
bacteria
alumnus
alumni
appendix
appendices
quiz
quizzes
knife
knives
wife
wives
oasis
oases
nucleus
nuclei
index
indeces
radius
radii
cactus
cacti
life
lives
species
species
wolf
wolves
ox
oxen
deer
deer
fungus
fungi
fish
fish
child
children
phenomenon
phenomena