onety one; onety two; onety three

[IAM]

I'd support any change, just because -ty and -teen sound awfully similar, so it is hard to decide whether the speaker meant fifty or fifteen, when it isn't pronounced clearly.

This is how the military handles that problem.

https://www.youtube.com/watch?v=NufAKh0ux8E

 

[Commodore]

tenyone does have a strong cute factor. Sounds like a puppies name.

Or how a toddler would say twenty-one.