{% for choice in field.choice_tuples %}
    <div class="field">
        <div class="ui radio checkbox">  {# TODO: use fields.attrs #}
            <input type="checkbox" value="{{ choice.1 }}" id="{{ field.extra_evaluated.id }}_{{ choice.4 }}" {{ field.input.attrs }} {% if choice.3 %}checked{% endif %}/>
            <label for="{{ field.extra_evaluated.id }}_{{ choice.4 }}">{{ choice.2 }}</label>
        </div>
    </div>
{% endfor %}