Craft CMS template code for wrapping every 2 half width blocks in a row

_entry.twig

{# Set outside of block iterator #}
    {% set number_of_halves = 0 %}

    {% for block in entry.casestudyModules %}

        {# Full width block types #}
        {% if block.type == "slider" %}
            {% if block.slideImage | length %}
                {% include 'modules/slider-module' %}
            {% endif %}
        {% elseif block.type == "textBlock" and block.width == "full" %}
            {% include 'modules/casestudy-copy-module' %}
        {% elseif block.type == "image"  and block.width == "full" %}
            {% set image = block.image.first() %}
            {% if image %}
                <div class="module casestudy-hero-image">
                    <img class="img-responsive" src="{{ image.getUrl() }}" alt="">
                </div>
            {% endif %}

        {# Half width block types #}
        {% elseif block.type == "textBlock" or block.type == "image" and block.width == "half" %}
            {# Increment number_of_halves here so only half block are counted, not all blocks #}
            {% set number_of_halves = number_of_halves + 1 %}

            {# Blocks are in an array. We can think of it as ['full', 'half', 'half', 'half', 'half', 'full', 'half', 'half' ... ] #}
            {# Current block will be a 'half'. Conditions here confirm its pre/succeeding block.widths, and thus whether it should be wrapped #}

            {# if there is a previous block to check #}
            {% if block.prev %}
                {# It must be a half width block, but is it a 1st or 2nd half? Counter tells us the position #}
                {% if number_of_halves is odd %}
                    <div class="row row-of-halves">
                {% endif %}

            {# if there isn't a previous block start a row #}
            {% else %}
                <div class="row row-of-halves">
            {% endif %}
            
            {# The actual block content #}
            <div class="col-md-6 half-block">
                {% if block.type == "textBlock" %}
                    ...
                {% else %}
                    ...
                {% endif %}
            </div>

            {# if there is a next block to check #}
            {% if block.next %}

                {% if number_of_halves is even %}
                    </div>
                {% endif %}

            {# if there isn't another block end a row #}
            {% else %}
                </div>
            {% endif %}
        {% endif %}

    {% endfor %}