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singular, plural (P.2)
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potato
potatoes
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monkey
monkeys
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brush
brushes
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table
tables
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cherry
cherries
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hippo
hippos
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toy
toys
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peach
peaches
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fox
foxes
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candy
candies
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mango
mangoes
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city
cities
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baby
babies
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cow
cows
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box
boxes
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