print "Enter a string: "; while(<>) { $line = $_; last if ($_ =~ /^\s*[Q|q]{1,1}[U|u]{1,1}[I|i]{1,1}[T|t{1,1}\s*$/); next if ($_ =~ /^$/ or $_ =~ /^\s+/$); if($line =~ /\s*([a-zA-Z]+\s*)+\s*(-?\d\d?)\s*/) { print $_; } }