In my conlang, every consonant+y ("uh" sound) is a "reference". Which is basically like a dynamic pronoun that starts out meaning potentially anything. But then whose meaning refines down as it continues being used in the conversation. e.g. ("co" being like a question word that indicates that the speaker is asking for more information about the following word):
Me: let's eat co dy for dinner tonight
Spouse: dy isn't Mexican
Me: agreed. dy isn't spicy. Maybe dy is pizza?
Spouse: ehhhh, I'm not super hungry. dy is lighter than pizza
etc...
So, like a bunch of pronouns that conversation partners can use to synchronize with each other. Almost like single-consonant-labeled "placeholder" words that stand in for some value whose identity gets clearer the more it gets used.