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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_dash_case(string: str) -> str: """ Convert a string to dash-delimited words. :: to-dac-biet-xe-lua :: alpha-beta-gamma """

    string = unidecode.unidecode(string)
    words = (_.lower() for _ in delimit_words(string))
    string = "-".join(words)
    return string