Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
Q:1/2=80
M:4/4
K:G
['GBdg fede dcBA', 'GBdg e/f/g e/f/g']  
X:1
L:1/8
Q:1/2=80
M:4/4
K:G
 GBdg fede | dcBA BcdB | GBdg fede | dcBA G3 z :: GBdg e/f/g e/f/g | DFAc B/c/d B/c/d | 
 GBdg e/f/g e/f/g | dcBA G3 z :|  