I believe this is it: 1. us 2. who 3. us 4. who 5. we 6. us 7. who 8. we 9. us 10. who 11. us 12. who 13. we 14. us 15. we 16. who 17. we 18. whom 19. who 20. us
Important tip: We vs. Us We is a subject, Us is not. Whom vs. Who Use whom if it can be replaced with him/her. Use who if it can be replaced with he/she. I hope this helped!
The snake moves as seamlessly and effortlessly as the ocean
Explanation:
To me, it seems as the most logical since the lines of the poem are explaining the snakes movements as 'waves' and tainting it with the words 'curving' and 'glides'.