How to repeat a loop after 4 posts [duplicate]

Assuming that you’re only using the counter to decide what style to use, the easiest way to achieve what you want would be to reset the $count variable once it gets to 4.

<?php elseif ($count == 4) : ?>  

    <div>Styled post 4</div>
    <?php $count = 0; ?>

<?php else : ?>

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