Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:6/8
K:D
['A2 d dcB ABA', 'A2 d dfa agf efg fdf']  
X:1
L:1/8
M:6/8
K:D
 A2 d dcB | ABA FED | FFF FEF | FED EFG | A2 d dcB | ABA F3 | fdf gec | edc d3 :: A2 d dfa | 
 agf efg | fdf ged | cdc BcB | A2 d dfa | agf efg | fdf gec | edc d3 :|  