1 Nephi 14:21

Behold, he shall see and write the remainder of these things;

yea, and also many things which have been.

yea, and also many things which have been.

yea - 25 occurrences in 24 verses - 1 Nephi 10:3, 4, 8, 12,   11:1, 5, 6, 8, 21, 22, 23, 32, 35,   12:1, 3, 16, 18,   13:5, 29, 37,   14:2, 3, 8, 21

yea and - 3 occurrences in 3 verses - 1 Nephi 11:23,   13:5,   14:21