Correct: first , second , third , seventh , tenth , thirteenth , seventeenth , twenty-first , twenty-seventh, thirty-second , forty-fifth , sixtieth , sixty-ninth , seventy-third, eighty-sixth , ninety-eighth, Incorrect: three , thirteen , thirty , four , forty , eighteen, twelve , twenty-three , thirty-seven , forty-six , fifty-two , sixty , sixteen , seventy-four , eighty-six , ninenty-nine,

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