banfuru'a fu'ivla

x₁ is the language with ISO 639-3 code “fra” (French).

In notes:

fasybau: f₁=b₁ is the French language used by b₂ to express/communicate b₃ (si'o/du'u, not quote).
kulnrkadje: x₁ is Acadian in aspect x₂.
kulnrkebeka: x₁ is Quebecois(e) in aspect x₂.