1. Inside X Outside
2. Ripe X Unripe
3. Material X Immaterial
4. Alive X Dead
5. Gentle X Rough
6. Appear X Disappear
7. Guilty X Innocent
8. Former X Latter
9. Include X Exclude
10. Agree X Disagree
11. Complete X Incomplete
12. Legible X illegible
13. Connect X Disconnect
14. Regular X Irregular
15. Certain X Uncertain
16. Detailed X Uncertain
17. Order X Disorder
18. Expected X Unexpected
19. Mortal X Immoral
20. Behave X Misbehave
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