2123

source: 
Boertien
Entry: 
2123
Example: 
might couldn't
Modal 1: 
might
Modal 2: 
couldn't
Modal 3: 
Gender: 
Male
Race/Ethnicity: 
White
Age: 
20
Level of Education: 
College Student
Home Community, Town, or State: 
TX (San Antonio)
Location Collected: 
TX (Unknown)
Year: 
c1980
Relation to Addressee: 
Status: 
Elicited
Notes: 
From Boertien, Harmon. 1986. "Constituent Structure of Double Modals," p. 314.