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As the process returns input unchanged if there is absolutely no match, you can use the Object.ReferenceEquals process to find out whether the system has manufactured any replacements into the enter string.?�が?�詞?�し?�使?�れ?�場?�、物?�人?�元?�の位置?�状?�か?�新?�い?�の?�交?�さ?�る?�と?�