Greetings, I've been told that some words in GA English shift their stress depending on their placement in a sentence or phrase. The example give to me was that of the "teen" numbers (thirteen, fourteen, fifteen, etc.). Judy is thirteen years old (thirteen is placed before a noun) Judy just turned thirteen (last word in a sentence or phrase) First of all, is this true? Secondly, what is the exact rule for this phenomenon and is there a more specific name for it? Also, where can I find more information on this (links)? Finally, and perhaps most importantly, are there any other words or types of words which this applies to or is it only the numbers thirteen to nineteen? Thanks so much!