Of course, some of the phrases start with one or two notes on one hand, and also end with one or two notes on the same hand, meaning you'd end up with three or four notes in a row. ChatGPT didn't quite understand the concept of looping at first, but I was able to get it split into phrases that will loop cleanly, and those that won't. For those that wouldn't, I asked ChatGPT to give me the opposite of it, allowing it to be looped.
So, not that you needed, or wanted it, but here's all 110 possible combination of three beats worth of triplets.
LOOP-FRIENDLY PHRASES
1. RRL RRL RRL 21. RLR RLR RLR 41. RLL RRL RRL 61. LRL RLR RLR
2. RRL RRL RLL 22. RLR RLR RLL 42. RLL RRL RLR 62. LRL RLR LRR
3. RRL RRL LRL 23. RLR RLR LRL 43. RLL RRL RLL 63. LRL RLR LRL
4. RRL RLR RLL 24. RLR RLR LLR 44. RLL RRL LRL 64. LRL RLR LLR
5. RRL RLR LRL 25. RLR RLL RRL 45. RLL RLR RLR 65. LRL RLL RRL
6. RRL RLL RRL 26. RLR RLL RLR 46. RLL RLR RLL 66. LRL LRR LRR
7. RRL RLL RLL 27. RLR RLL RLL 47. RLL RLR LRL 67. LRL LRR LRL
8. RRL LRR LRL 28. RLR LRR LRL 48. RLL RLR LLR 68. LRL LRR LLR
9. RRL LRL RRL 29. RLR LRR LLR 49. RLL RLL RRL 69. LRL LRL RRL
10. RRL LRL RLL 30. RLR LRL RRL 50. RLL RLL RLR 70. LRL LRL RLR
11. RRL LRL LRL 31. RLR LRL RLR 51. RLL RLL RLL 71. LRL LRL LRR
12. RRL RLR LRL 32. RLR LRL LRL 52. LRR LRR LRR 72. LRL LRL LRL
13. RRL LRR LRL 33. RLR LLR RLR 53. LRR LRR LRL 73. LLR RLR RLR
14. RRL RLL RLL 34. RLR LLR RLL 54. LRR LRR LLR 74. LLR RLR LRR
15. RLR RLL RRL 35. RLR LLR LRL 55. LRR LRL RRL 75. LLR RLR LRL
16. RLR RLL RLL 36. RLR LLR LLR 56. LRR LRL RLR 76. LLR RLR LLR
17. RRL RLL RRL 37. RLL RRL LRL 57. LRR LRL LRR 77. LLR RLL RLR
18. RLR RLL RLR 38. RLL RLR LRL 58. LRR LLR RLR 78. LLR LRR LRR
19. RLR LRL RLR 39. RLL RLR LLR 59. LRR LLR RLL 79. LLR LRR LRL
20. RLR RLL RRL 40. RLL RLR LLR 60. LRR LLR LLR 80. LLR LLR RLL
NON-LOOP-FRIENDLY PHRASES
1. RRL RRL RLR LLR LLR LRL 16. RLL RLR LRR LRL LRL RLL
2. RRL RRL LRR LLR LLR RLL 17. LRR LRL RLL RLL RLR LRR
3. RRL RLR RLR LLR LRL LRL 18. LRL RRL RLL RLR LLR RRL
4. RRL RLR LRR LLR LRL RLL 19. LRL RLR RLL RLR LRL RRL
5. RRL RLR LLR LLR LRL RRL 20. LRL RLL RLL RLR RRL RRL
6. RRL RLL RLR LLR RRL LRL 21. LRL LRL RLL RLR RLR RRL
7. RRL LRR LRR LLR RLL RLL 22. LLR RLR RLL RRL LRL RRL
8. RRL LRR LLR LLR RLL RRL 23. LLR RLL RRL RRL LLR RRL
9. RRL LRL RLR LLR RLR LRL 24. LLR RLL RLL RRL LLR RLR
10. RRL LRL LRR LLR RLR RLL 25. LLR LRR LRL RRL LLR RLR
11. RLR RLR LRR LRL LRL RLL 26. LLR LRL RRL RRL RLR LRL
12. RLR LRR LRR LRL RLL RLL 27. LLR LRL RLL RRL RLR LRL
13. RLR LRL LRR LRL RLR RLL 28. LLR LRL LRL RRL RLR LRL
14. RLR LLR LRR LRL RRL RLL 29. LLR LLR RLL RRL RRL LRL
15. RLL RRL LRR LRL LLR RLL 30. LLR LLR LRL RRL RRL LRR