I know I might could & should enjoy myself.

source: 
Montgomery
Entry: 
186
Example: 
I know I might could & should enjoy myself.
Modal 1: 
might
Modal 2: 
could
Gender: 
Unknown
Race/Ethnicity: 
Unknown
Age: 
unknown
Level of Education: 
Unknown
Home Community, Town, or State: 
Unknown
Location Collected: 
Unknown
Relation to Addressee: 
Unknown
Medium: 
Written
Sentence Structure: 
1.4
Status: 
Naturalistic
Notes: 
Token also includes 'might should', cited in Eliason (1869)