And I said unto them:

and - 70 occurrences in 33 verses - 1 Nephi 15:1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36

and I - 8 occurrences in 8 verses - 1 Nephi 15:8, 20, 22, 24, 27, 28, 29, 30

and I said unto them - 7 occurrences in 7 verses - 1 Nephi 15:8, 22, 24, 27, 28, 29, 30