Classification
Despite the fact that the family consists of just two closely related languages, Baibai and Fas (40% cognate), there has been considerable confusion over its membership, apparently due to a misalignment in the publication (Loving & Bass 1964) of the data used for the initial classification. (See Baron 1983.) The initial name of the family was Fas, but Laycock (1975) changed it to Baibai when he mistakenly moved the Fas language to the Kwomtari family, an error perpetuated in much of the literature. Baibai (Baibai and Biaka) is therefore not a synonym for the Fas family (Baibai and Fas). See Kwomtari–Fas languages for details.
A few regular sound correspondences are apparent (Baron 1983:21 ff):
| correspondence | Fas example | Baibai example | Gloss |
|---|---|---|---|
| ʙ–mb | mɛʙəkɛ | mɛmbəkɛ | "star" |
| *ɾ → k, ɾ | kəmas | ɾəmas | "bow" |
| k–f metathesis* | kafəki | ɾaɾəfi | "tobacco" |
| *k → zero, *k | kɛj | ɾɛɡi | "hand" (‹ *ɾɛki) |
*/k/–/f/ metathesis still operates in Fas. /s/–/f/ and /s/–/m/ metathesis has been reconstructed.
*/k/ is lost in some environments. Baibai may be phonemically /ɾɛki/.
Baron sees no evidence that the similarities between the Fas and Kwomtari families are any greater than with neighboring unrelated families, and thus doubts the validity of the putative Kwomtari–Fas family.
Read more about this topic: Fas Languages