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