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R sounds are rough, and L sounds are smooth, according to cross-cultural study http://www.birmingham.ac.uk/news/2024/r-sounds-are-rough-and-l-sounds-are-smooth-according-to-cross-cultural-study
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R sounds are rough, and L sounds are smooth, according to cross-cultural study http://www.birmingham.ac.uk/news/2024/r-sounds-are-rough-and-l-sounds-are-smooth-according-to-cross-cultural-study
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