From the introduction: "The phonological changes associated with the potential and completive aspects in Zapotecan languages have been traditionally analyzed suppletively (Butler 1980, Pickett 1960). In this paper I examine suppletive and nonsuppletive analyses of the potential and completive aspects of Chichicapan Zapotec, hereafter ChZ. I show that a nonsuppletive analysis of the facts of ChZ is more insightful than a suppletive one."
Benton, Joseph P.
"The completive and potential form of Chichicapan Zapotec verbs,"
Work Papers of the Summer Institute of Linguistics, University of North Dakota Session: Vol. 25, Article 2.
Available at: https://commons.und.edu/sil-work-papers/vol25/iss1/2