Google Translate does not offer Mam. This translator asks Google for Mam (Google), the closest language it does offer, and then rewrites that into Mam with a documented set of rules: word swaps, sound changes and grammar. It is a rule-based rewrite, not a human translation, so check anything that matters with a speaker.
30.6 on 300 real sentences; Google's Mam (Google) as is: 28.1.
The score is chrF: how closely the output matches what real Mam speakers wrote, character by character, from 0 to 100. Tested on 300 held-out verses of the Comitancillo Mam New Testament (Wycliffe 2009), a free, meaning-based translation, so no system scores high against it.
Google's Mam in one spelling: the ALMG alphabet of Central Mam (Comitancillo).
The rules are a plain file anyone can read, test and copy. Every translation shows Google's Mam (Google) underneath, so you can see exactly what the rules changed.
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