They might not could have gone over the state line to get her.

source: 
Skipper
Entry: 
146
Example: 
They might not could have gone over the state line to get her.
Modal 1: 
might not
Modal 2: 
could
Gender: 
Male
Race/Ethnicity: 
White
Age: 
25
Level of Education: 
Unknown
Home Community, Town, or State: 
Unknown
Location Collected: 
SC (Unknown)
Relation to Addressee: 
unknown
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic