There are some sets of images with similar themes, appearing 2 or more times, plus a few ringers: 1. * Swan 2. * Sharks 3. * Sea / Boat 4. * Explosions 5. * Stars (or planets) 6. * Hanso 7. * Volcanos 8. * Crowds (or groups) 9. * Microbiology / Drugs 10. * Flames 11. * Optics or reflections or shadows 12. * Weather / Clouds / Atmosphere 13. * Polar Bears 14. * Boars 15. * Raw meat or organs 16. * Oddities: 17. 1. * Dharmacakra (8-spoked wheel) 18. 2. * Joop 19. 3. * Card with "Evident Agenda" printed on it 20. 4. * Horse 21. 5. * HAZMAT suit 22. 6. * Mapinguari * Subliminally, subjects of the test would tend to pick out images or classes of images that make the most impr