You cannot use BEGIN there. See my response earlier, where I do a very similar solution. I use CHECK instead (because Perl has not seen the __DATA__ marker yet, if you use BEGIN).

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Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;