Display tag in 4 column

Hello i have this code that display 3 Column of tags, but i want to display 4 column but i don´t know how.
Anybody can help me, i am a newbie in wordpress and Php
Thanks

<?php
$tags = get_tags( array('name__like' => "a", 'order' => 'ASC') );
$tags_count = count($tags);
$count = intval( $tags->count );
$percolumn = ceil($tags_count / 3);

for ($i = 0;$i < $tags_count;$i++):
    if ($i < $percolumn):
    $tag_left .= '
	<li><a href="'. get_tag_link($tags[$i]->term_id) . '"rel="tag">' . $tags[$i]->name .' (' . $tags[$i]->count . ')</a></li>
' . "\n";
    elseif ($i >= $percolumn && $i < $percolumn*2):
    $tag_mid .= '
	<li><a href="'. get_tag_link($tags[$i]->term_id) . '"rel="tag">' . $tags[$i]->name .'  (' . $tags[$i]->count . ')</a></li>
' . "\n";
    elseif ($i >= $percolumn*2):
    $tag_right .= '
	<li><a href="'. get_tag_link($tags[$i]->term_id) . '"rel="tag">' . $tags[$i]->name .' (' . $tags[$i]->count . ')</a></li>
' . "\n";
    endif;
endfor;
?>

<div class="list">
<ul>
<?php echo $tag_left; ?>
</ul>
</div>

<div class="listlist">
<ul>
<?php echo $tag_mid; ?>
</ul>
</div>

<div class="list">
<ul>
<?php echo $tag_right; ?>
</ul>
</div>