Tolong jelaskan mengenai a- dari Imbuhan fosil dalam bahasa Austronesia

sa-, sa- + ali(N)-, saN-

Menurut Blust (2001, 2009), morfem fosil *kali ~ *qali digunakan dalam berbagai bahasa Austronesia untuk menunjuk objek yang mengandung "hubungan dengan alam gaib."

Blust, Robert A. 2001. "Historical morphology and the spirit world: *qali/kali-prefixes in Austronesian languages." In John Bradshaw and Kenneth L. Rehg (eds.) Issues in Austronesian Morphology. A festschrift for Byron W. Bender. Canberra: Pacific Linguistics, 15–73.

Blust, Robert A. 2009. The Austronesian Languages. Canberra: Pacific Linguistics, Research School of Pacific and Asian Studies, Australian National University. , .

Li, Paul Jen-kuei and Shigeru Tsuchida. 2009. "Yet more Proto Austronesian infixes." Discovering history through language: papers in honour of Malcolm Ross, 345–362. Canberra: Pacific Linguistics.

Mintz, Malcolm W. 1992. "The fossilised affixes of Bikol." Currents in Pacific linguistics: papers on Austronesian languages and ethnolinguistics in honour of George W. Grace, 265–291. Canberra: Pacific Linguistics.