You might could have helped me.

source: 
LAGS
Entry: 
458
Example: 
You might could have helped me.
Modal 1: 
might
Modal 2: 
could
Gender: 
Female
Race/Ethnicity: 
White
Age: 
72
Level of Education: 
3rd grade; literate
Home Community, Town, or State: 
AL (Peterman)
Location Collected: 
AL (Peterman)
Year: 
1974
Relation to Addressee: 
subject to fieldworker
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic