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  1. or download this
    while (<STDIN>) {
    if (/a/i && /e/i && /i/i && /o/i && /u/i) {
    print;
    }
    }
    
  2. or download this
    hile (<>) {
    print if
    (/^[^aeiou]*a[^eiou]*e[^aiou]*i[^aeou]*o[^aeiu]*u[^aeio]*$ );
    }