Template:Sub difficulty

Example usage:

{"params":{"title1":{"suggested":true},"image1":{"suggested":true},"caption1":{"suggested":true},"class":{"suggested":true},"main_difficulty":{"suggested":true},"previous_difficulty":{"suggested":true},"next_difficulty":{"suggested":true},"other_names":{"suggested":true},"old_names":{"suggested":true}},"sets":[],"maps":{}}