Used to could.
source:
LAGS
Entry:
672
Example:
Used to could.
Modal 1:
used to
Modal 2:
could
Gender:
Female
Race/Ethnicity:
White
Age:
33
Level of Education:
Graduate school (Master's degree)
Home Community, Town, or State:
TX (Houston)
Location Collected:
TX (Houston)
Year:
1975
Relation to Addressee:
subject to fieldworker
Medium:
Spoken
Sentence Structure:
unknown
Status:
Naturalistic