1 Nephi 10:15

And after this manner of language did my father prophesy

and speak unto my brethren,

and also many more things which I do not write in this book;

for I have written as many of them as were expedient for me in mine other book.

and also many more things which I do not write in this book;

this - 15 occurrences in 12 verses - 1 Nephi 10:5, 6, 8, 15,   11:7,   12:18,   13:6, 8, 27, 34,   14:4, 24