You used to could buy them.
source:
LAGS
Entry:
634
Example:
You used to could buy them.
Modal 1:
used to
Modal 2:
could
Gender:
Male
Race/Ethnicity:
White
Age:
60
Level of Education:
4th grade
Home Community, Town, or State:
AL (Alpine)
Location Collected:
AL (Alpine)
Year:
1973
Relation to Addressee:
subject to fieldworker
Medium:
Spoken
Sentence Structure:
1.0
Status:
Naturalistic