Subject to the provisions of Rule 404, a party may obtain discovery of documents and tangible things otherwise discoverable under Rule 402.B and prepared in anticipation of litigation or for trial by or for another party or by or for that other party’s representative (including the party’s attorney, consultant, surety, indemnitor, insurer, or agent) only upon a showing that the party seeking discovery has substantial need of the materials in the preparation of the party’s case and that the party is unable without undue hardship to obtain the substantial equivalent of the materials by other means. In ordering discovery of such materials when the required showing has been made, the court shall protect against disclosure of the mental impressions, conclusions, opinions, or legal theories of an attorney or other representative of a party concerning the litigation, including communications between the attorney and client, whether written or oral. A party may obtain without the required showing a statement previously made by that party concerning the action or its subject matter. Upon request, a person not a party may obtain without the required showing a statement previously made by that person concerning the action or its subject matter. If the request is refused, the person may move for a court order. The provisions of Rule 443.D apply to the award of expenses incurred in relation to the motion. For purposes of this paragraph, a statement previously made is (1) a written statement signed or otherwise adopted or approved by the person making it, or (2) a stenographic, mechanical, electrical, or other recording, or a transcription thereof, which is a substantially verbatim recital of an oral statement by the person making it and contemporaneously recorded.