{% for result_type, images in images_by_type.items() %}

{{ result_type }}

{% for img in images %}

{{ img.sample }}

{{ img.title }}

{% endfor %}

{% endfor %}

{% for sample, images in images_by_sample.items() %}

{{ sample }}

{% for img in images %}

{{ img.result_type }}

{{ img.title }}

{% endfor %}

{% endfor %}