I might would.

source: 
LAGS
Entry: 
583
Example: 
I might would.
Modal 1: 
might
Modal 2: 
would
Gender: 
Female
Race/Ethnicity: 
Black
Age: 
63
Level of Education: 
High school
Home Community, Town, or State: 
TX (San Antonio)
Location Collected: 
TX (San Antonio)
Year: 
1975
Relation to Addressee: 
subject to fieldworker
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic