The Differences Between High and Low Vowels in Native American Languages

It seems to be, and this is just based on me looking at lots of Native American languages where nasalization matters, it sure seems like certain kinds of vowels don't like to be nasalized. So E and Ooh are less likely to be nasalize than E or A. Especially those that have phonemic rather than conditioned nasalization. That's interesting. And like me I was like, I find it hard to pronounce harder to pronounce E than to pronounce A.