<>;for(<>){
	/(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)/;
	++${"$1$3$5$7$9$11"};
	++${"$2$4$6$8$10"};
}
$c=999;
for(0..179){
	$x=join'',sort{.5<=>rand}qw(i a a e u u);
	redo if $2{$x}++;
	if($c>$$x){
		$c=$$x;
		$a=$x;
	}
}
$c=999;
for(0..119){
	$x=join'',sort{.5<=>rand}qw(n b m g r);
	redo if $2{$x}++;
	if($c>$$x){
		$c=$$x;
		$b=$x;
	}
}
"$a$b"=~/(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)/;
print "$1$7$2$8$3$9$4$10$5$11$6\n";