How to make a wordpress category display tile like this?

Question

WordPress

There is such a tile, a row of 4 pcs, a row of 3 pcs.
The site is on a bootstrap, and therefore it is necessary that the class = "col-md-3" be supplied
in the first row and in the second col-md-4
Rows in the cycle will replace each other in turn, as in the screenshot



I tried to insert a counter, but how to provide for adding rubrics, the cycle continued in the same vein.

<?php
$args = array(
  'parent' => 0,
  'hide_empty' => 0,
  'exclude' => '1', // ID рубрики, которую нужно исключить
  'number' => '0',
  'orderby' => 'count',
  'pad_counts' => true
);
$catlist = get_terms('category',$args);
$count = 1;
?>
 <?php foreach ($catlist as $cat) : ?>
 <div <? if ($count == 1) { ?> class="category_slider_wrap_big category_slider_wrap" <? } else {?>  class="category_slider_wrap_small category_slider_wrap" <? } ?> >
 <div class="category_slider_item">
 <div class="category_slider_item_title">
  <a href="<?php echo get_term_link($cat->slug, 'category'); ?>"><?php echo $cat->name; ?></a>
 </div>
</div>
</div>
 <?php $count++; ?>
 <?php endforeach; ?>