@chjara @alina @expergetech (Modern Arabic, Urdu, Farsi, …) x (English, German, French, …) = a lot of transliteration systems, never mind the fact that often there are multiple transliteration systems in use
(and at the very rare end of the scale you can end up with e.g. transliterations between different writing systems which use different extensions of the latin alphabet. or cyrillic and latin or similar)