while (<DATA>) {
    print "$1\n" if m/gif"><\/td><td>(?:<b>)?([A-Z0-9\(\)\[\]]+)(?:<\/b>)?<\/td>(?:<td>(?:<b>)?([A-Z0-9\(\)\[\]]+)(?:<\/b>)?<\/td>)?<\/tr>/;
}

__DATA__
gif"></td><td>XXX</td></tr>
gif"></td><td><b>XXX</td></tr>
gif"></td><td><b>XXX</b></td></tr>
gif"></td><td><b>XXX</td><td><b>YYY</td></tr>