Grammar is always a tricky subject. There is a common belief that one should not use prepositions at the ends of sentences, yet it is difficult to find that written out as a hard-and-fast rule in a grammar guide. Furthermore, the linguistic contortions one has to go through to avoid end-of-sentence prepositions are often quite convoluted.
When I was in Texas, a phrase that I sometimes heard was "might have could." It makes little sense, and it is something I have only heard from Southerners (well, those in the far south, not Marylanders). I gave up on trying to understand what the point of the redundant phrase is.
When I was in Texas, a phrase that I sometimes heard was “might have could.”
Not sure of that one, nor the ilk of those from which you heard it. Maybe you were still over in Oklahoma? It’s a big country (Texas) and though we mostly speak english (of some sort), of that expression I’m not familiar. On the other hand you might take note of a far more common saying, “Don’t be ugly!” A former associate of mine (from Ohio) was so vexed by this statement she would say, “You’re born ugly! You can’t be ugly!.”
Denial ain’t just a river in Egypt. - Mark Twain