They might could; I'm not sure. But they might could. My father would could tell you some stories but I'm not sure if he could tell you what you want to know.

source: 
DiPaolo
Entry: 
1411
Example: 
They might could; I'm not sure. But they might could. My father would could tell you some stories but I'm not sure if he could tell you what you want to know.
Modal 1: 
would
Modal 2: 
could
Gender: 
Female
Race/Ethnicity: 
White
Age: 
unknown
Level of Education: 
Unknown
Home Community, Town, or State: 
Unknown
Location Collected: 
TX (Unknown)
Relation to Addressee: 
woman to woman
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic
Notes: 
Continued from 1409 and 1410