def all_a
      result = []
      @pages.each do |page|
        next unless page.page_a_tags
        page.page_a_tags.compact.each do |tag|
          tag[0] = '-' unless tag[0]
          tag[1] = '-' unless tag[1]
          tag[2] = '-' unless tag[2]
          result << [page.page_url, tag[0], tag[1], tag[2]]
        end
      end
      result.compact
    end
def all_a
      result = []
      @pages.each do |page|
        next unless page.page_a_tags
        page.page_a_tags.compact.each do |tag|
          tag[0] = '-' unless tag[0]
          tag[1] = '-' unless tag[1]
          tag[2] = '-' unless tag[2]
          result << [page.page_url, tag[0], tag[1], tag[2]]
        end
      end
      result.compact
    end
get all a tags and return array of it