You used to could get it done.

source: 
LAGS
Entry: 
688
Example: 
You used to could get it done.
Modal 1: 
used to
Modal 2: 
could
Gender: 
Male
Race/Ethnicity: 
Black
Age: 
73
Level of Education: 
None (Illiterate)
Home Community, Town, or State: 
LA (Clinton)
Location Collected: 
LA (Clinton)
Year: 
1977
Relation to Addressee: 
subject to fieldworker
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic