I used to could blow on it a little bit.

source: 
LAGS
Entry: 
685
Example: 
I used to could blow on it a little bit.
Modal 1: 
used to
Modal 2: 
could
Gender: 
Male
Race/Ethnicity: 
White
Age: 
85
Level of Education: 
4th grade
Home Community, Town, or State: 
AL (Needham)
Location Collected: 
AL (Needham)
Year: 
1978
Relation to Addressee: 
subject to fieldworker
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic