#!/usr/bin/perl -w

use strict;
use Benchmark;

my $string = " field1 , field2 , field3 , field4 , 
     field5 , field6 , field7 , field8 , field9 , 
     field10 , field11 , field12 "; 

sub regexp {
	$string =~ m#^(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*)$#o;
	my $s = $11;
	print $s;
}

sub splitter {
	my $s = (split(/\s*,\s*/, $string))[3];
	print $s;
}