| The form of the word changes radically. |
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a duck - ducks |
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a child - children |
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a book - books |
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a brother - brothers |
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a daughter - daughters |
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a father - fathers |
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a foot - feet |
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a (male) cousin - cousins |
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a goose - geese |
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a capital - capitals |
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a hand - hands |
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a man - men |
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a mother - mothers |
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a night - nights |
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a sister - sisters |
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a tooth - teeth |
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a toe - toes |
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a bicycle - bicycles |
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a finger - fingers |
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a course - courses |
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an eye - eyes |
