This is the only video i found that doesnt miss any essential info and doesnt feed you with mountains of unnecessary bullshit during the video. But only 5K views? Gotta love the youtube algorithm's prioritization.
Thanks for pointing that out. I think what you're talking about is for syllables and diphthongs. The 3 vowels you listed are "strong" in that context, meaning they always produce a syllable, and two of them together produce two syllables. I didn't really get into that in this video. Perhaps it would have been more correct if I had called them hard and soft, instead of weak and strong. The terms hard and soft apply to those hard sounds from the G and the C, for example.