@mdione @dancingtreefrog I don't know any of those languages, but don't they use a sound which is more or less midway between our R an L? So R and L will just sound like variants of that phoneme, not two different ones?
@timtfj @dancingtreefrog that's above my knowledge. I only think in terms of how I move the parts of my mouth to produce the sound. R is a quick tap of the roof, L is more "soft" (sorry, again, not an academic, I lack the words.), a more gentle close/open movement. I'm not sure you can do the same tap with the English L, maybe the Indian R is the closest.
In Spanish and Italian, RR is worse, it's a trill.