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$_ = "hello"; ... $_ = "aeiou"; print "it has all the vowels\n" if (/a/i && /e/i && /i/i && /o/i && /u +/i); print "it still has all the vowels\n" if ($_ =~ /a/i && $_ =~ /e/i && +$_ =~ /i/i && $_ =~ /o/i && $_ =~ /u/i);