I have a list of topics:

```
list1 = [topic1, topic2, topic3, topic4, topic5, topic6]

```

I would like to check another list against this list:

```
list2 = [topic2, topic4, topic6]

```

something like this:

```
{% if list2.items in list1 %}

```

where each item from list2 is checked for in list1. if all or any of the items from list2 are in list 1 then it's True. I figured this would be simple but I can't seam to find anything helpful about this.

Full example:

```
{% set list1 = [topic2, topic4, topic6] %}

{% for post in posts %}

   {% set list2 = [topic1, topic2, topic3, topic4, topic5, topic6] %}

   {% for topic in list2 %}
       {% if topic in list1 %}

          {# output of post list based on conditions #}

       {% endif %}
   {% endfor %}
{% endfor %}

```

\*\* I am working in a cms with out server side access so I only have the templating language to work with.