> one is also a valid abbreviation of their language's word. No, you can't abbreviate "ou" with "o", it's a different sound. Similarly in English, you don't us

> one is also a valid abbreviation of their language's word. No, you can't abbreviate "ou" with "o", it's a different sound. Similarly in English, you don't use "t" for "th" in abbreviation (maths vs mats).