They might could say.

source: 
LAGS
Entry: 
518
Example: 
They might could say.
Modal 1: 
might
Modal 2: 
could
Gender: 
Male
Race/Ethnicity: 
White
Age: 
46
Level of Education: 
Junior college
Home Community, Town, or State: 
AR (Mabelvale)
Location Collected: 
AR (Little Rock)
Year: 
1975
Relation to Addressee: 
subject to fieldworker
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic