1 Nephi 16:20

And it came to pass that Laman and Lemuel and the sons of Ishmael

did begin to murmur exceedingly,

because of their sufferings and afflictions in the wilderness;

and also my father began to murmur against the Lord his God;

yea, and they were all exceedingly sorrowful,

even that they did murmur against the Lord.

yea, and they were all exceedingly sorrowful,

all - 33 occurrences in 30 verses - 1 Nephi 16:4, 6, 8, 11, 20, 35,   17:5, 6, 20, 22, 30, 31, 35, 43, 50,   18:6, 8, 16, 24, 25,   19:2, 11, 12, 13, 14, 16, 17, 19, 20, 21