Thank you so much. ODAS
COMP is such a wonderful way to memorize that.
I'm really grateful.
I have never been able to state any rule regarding this without looking it up;
I am not quite sure if ODASCOMP is an American grammar rule and ODSACOMP is a British grammar rule; or if it depends in which region where we may be either.
However, regarding on that, I believe it can be ODSA
COMP too because it all depends in what you want to stress.
Please take a look on this page: http://dictionary.cambridge.org/us/grammar/british-grammar/about-adjectives-and-adverbs/adjectives-order
An ugly old
hag x an old ugly
Some fat old
men x some old fat
It is probably instinctive for most speakers.
I have read that it goes from more specific to more general, and that makes sense to me.