#!/usr/bin/perl -w
use strict;

my %value;
for (<DATA>){ 
	chomp;
	$value{$_}++ if $_;
}

my $max = (sort map { $value{$_} } keys %value)[-1];

for my $count (1..$max){
	for (sort keys %value){
		print "$_\n" if $value{$_} >= $count;
	}
}

__DATA__
2
2
2
3
3
3
4
4
4

##</code><code>##

for my $count (reverse 1..$max){