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Horizontal 4. to walk/stroll 6. to swim 8. to play guitar 9. to play soccer 10. to pay attention 13. to cook 14. to play basketball 16. to bike 17. to workout 18. to do homework 19. to skateboard 20. to play piano

Vertical 1. to hike 2. to meet someone 3. to ski 5. to do horseback riding 7. to play sports 11. to kayak 12. to play volleyball 15. to do yoga