I used to could, but I can't now.
source:
LAGS
Entry:
644
Example:
I used to could, but I can't now.
Modal 1:
used to
Modal 2:
could
Gender:
Male
Race/Ethnicity:
Black
Age:
61
Level of Education:
4th grade
Home Community, Town, or State:
GA (Valdosta)
Location Collected:
GA (Valdosta)
Year:
1971
Relation to Addressee:
subject to fieldworker
Medium:
Spoken
Sentence Structure:
1.1
Status:
Naturalistic