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