tokens: In the 2016 version , the value of the User-Agent header changed , as did the method of generating the relative path in the URL : now the part before /index.php is a mix of a pronounceable ( if not entirely meaningful ) word and random letters and numbers , for example , “ muromec280j9tqeyjy5sm1qy71 ” or “ parabbelumf8jgybdd6w0qa0 ” .