1. Intricate
2. Involved
3. Elaborate
4. Labyrinthine
5. Gordian
6. Convoluted
7. Tangled
8. Detailed
9. Difficult
10. Involuted
11. Baroque
12. Confusing
13. Byzantine
14. Obscure
15. Perplexing
16. Intricated
17. Involving
18. Vexing
19. Problematic
20. Intricate
21. Obfuscated
22. Oblique
23. Knotty
24. Sophisticated
25. Byzantine
26. Involved
27. Complicated
28. Diffuse
29. Obscure
30. Involved

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