I'm new to Distributive Morphology and cannot find any resources of how to construct formative lists for morphemes. I know they're meant to be the feature bundles of the morphemes, but I don't really know anything else.
Anyway, what I'm trying to work out are the formative lists for the suffix "-ian" and "-ism". Some examples of words formed are:
magic > magician, Canada > Canadian
race > racism, manner > mannerism
One thing that I already know are that, "-ism" is a category selecting affix (it attaches to nouns in general) while "-ian" is a root selecting morpheme.
For "-ian", I question whether it even has feature bundles when it doesn't have a set rule for the kinds of things it attaches to and has a kind of idiosyncratic meaning. For "-ism", I struggle with what are the possible kinds of features I could be considering.
I don't want the answers, but I would really appreciate some hints to point me in the right direction.