Might could.
source:
LAGS
Entry:
346
Example:
Might could.
Modal 1:
might
Modal 2:
could
Gender:
Unknown
Race/Ethnicity:
White
Age:
42
Level of Education:
Unknown
Home Community, Town, or State:
Unknown
Location Collected:
FL (Wausau)
Relation to Addressee:
subject to fieldworker
Medium:
Spoken
Sentence Structure:
unknown
Status:
Naturalistic