first
加入词篮second
third
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fifth
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eighth
ninth
tenth
eleventh
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thirteenth
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sixteenth
seventeenth
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twenty-first
one
two
three
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ten
eleven
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seventeen
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twenty
twenty-one
twenty-nine
thirty
forty
fifty
sixty
seventy
eighty
ninety
ninety-nine
hundred
thousand
million
billion
trillion
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