The Insomuch/Inasmuch Shift and Mosiah Priority

I've discussed before Brent Metcalfe's finding that during the dictation of the Book of Mormon Joseph Smith gradually shifted his preference from the word "therefore" to the roughly synonymous term "wherefore". When the word ratios are graphed, the shift clearly supports Mosiah priority (that is, the theory that Smith dictated Mosiah through the end of the Book before dictating 1 Nephi through Words of Mormon).

In order to extend Brent's study, I looked at the Book of Mormon's use of the roughly synonymous terms "inasmuch" and "insomuch", as graphed below.  The results here are nowhere near as striking as the therefore/wherefore case, but it does appear to me that the Mosiah priority curve is somewhat smoother. (Note that the results for Jarom and Omni are exaggerated because of the short length of those books. Books in which neither "insomuch" nor "inasmuch" occur are excluded from the graphs.)

Under Mosiah priority, the results seem to show a slow shift in preference from "insomuch" to "inasmuch". Under 1 Nephi priority, the opposite is true. Unfortunately, the D&C revelations for the Book of Mormon translation period provide no material for comparison. (The instance of "inasmuch" in D&C 3:16 is a later addition.) However, Joseph's later revelations exhibit an overwhelming preference for "inasmuch". This would seem to support the Mosiah priority findings.