This is cool! The inclusion of z kind of breaks this for my fellow Scandinavians though. Many of us don't really hear the difference between z and s, and even if we do we can't pronounce it properly.

The P/B distinction will be difficult for many people as well.

I believe this is one of the reasons that Toki Pona only has nine consonants (/p, t, k, s, m, n, l, j, w/) and five vowels (/a, e, i, o, u/).

Somme kind of error correcting would be nice too, perhaps?

Maybe Z as in 'zed'?

It reminds me of yan tan tethera [0], leading to such glorious encodings as 'Yan-a-bub' (eleven, County Durham), 'Tetherabum' (eighteen, Swaledale and Tong in Yorkshire) and 'Fotherydik' (fourteen, West Country Dorset.) Each variant only seems to go up to twenty, but that's enough for hex...

[0]: https://en.wikipedia.org/wiki/Yan_tan_tethera

> The P/B distinction will be difficult for many people as well.

P/V/F confusion is also a thing, in Indonesia.

V and F tend to be pronounced as P. And if you pronounce the letter "correctly", some Indonesians might not recognize the word. They've never heard it this way.