9.5 Choosing between Consecutive Contractions [X.35.c, XIV.45.f]

Where a choice must be made between two consecutive contractions, preference is given to the contraction that more nearly indicates correct pronunciation. Examples:

(wh)(er)(ever) [not] (where)v(er)
(wh)(er)e'(er) [not] (where)'(er)
mu(st)h [not] mus(th)
di(spirit)(ed) [not] (dis)pirit(ed)