attemtps

  ---
  - hosts: localhost
    tasks:
      - lineinfile:
          path: ../stackoverflow.yml
          state: present
          insertafter: "{{ item.letter }}"
          line: "{{ item.text }}"
        loop:
          - { letter: 'b:', text: "test" }
          - { letter: 'c:', text: "test" }
          - { letter: 'd:', text: "test" }