He used to wouldn't.
source:
LAGS
Entry:
703
Example:
He used to wouldn't.
Modal 1:
used to
Modal 2:
wouldn't
Gender:
Female
Race/Ethnicity:
Black
Age:
65
Level of Education:
8th grade
Home Community, Town, or State:
TN (Covington)
Location Collected:
TN (Covington)
Year:
1977
Relation to Addressee:
subject to fieldworker
Medium:
Spoken
Sentence Structure:
1.0
Status:
Naturalistic