Some words that can be read properly both with a mirror and without a mirror are MOM, WOW, T.I.T, TAT, TOOT (see full details here https://brainly.ph/question/243662)
Other examples:
1. HUH 2. YAY 3. TOT 4. TAT 5. HAH 6. AHA 7. ATTA 8. A.M.A. 9. YEY 10. MA'AM
