You might find my native language, Sinhala, quite interesting: https://www.omniglot.com/writing/sinhala.htm
E.g.
ක ka
කි ki
කු ku
කෙ ke
කො koE.g.
ක ka
කි ki
කු ku
කෙ ke
කො koကာ - ka ကီ - ki ကူ - ku ကေ - ke ကို - ko ကော - kaw