{foreach $list as $k => $link} {foreach $link.child_list as $second_k => $second_link} {notempty name="$second_link.child_list"} {foreach $second_link.child_list as $third_k => $third_link}

{$third_link.title}

{notempty name="$third_link.child_list"} {foreach $third_link.child_list as $four_k => $four_link}

{$four_link.title}

{/foreach} {/notempty}

{/foreach} {/notempty} {/foreach} {/foreach}