I was afraid you might couldn't find it.

source: 
DiPaolo
Entry: 
1423
Example: 
I was afraid that you might couldn't find it.
Modal 1: 
might
Modal 2: 
couldn't
Gender: 
Female
Race/Ethnicity: 
White
Age: 
47
Level of Education: 
High School
Home Community, Town, or State: 
TX (Henderson)
Location Collected: 
TX (Henderson,)
Year: 
1980
Relation to Addressee: 
interviewee to interviewer
Medium: 
Spoken
Sentence Structure: 
1.4
Status: 
Naturalistic