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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 starter(cls):
 """Get bounced start URL."""

        data = cls.getPage(cls.url)
        url1 = cls.fetchUrl(cls.url, data, cls.prevSearch)
        data = cls.getPage(url1)
        url2 = cls.fetchUrl(url1, data, cls.nextSearch)
        return cls.prevUrlModifier(url2)