Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:2/2
K:G
['B G/G/G BG cABG AD D/D/D =FGAF', 'A/A/A g2']  
X:1
L:1/8
M:2/2
K:G
 B | G/G/G BG cABG | AD D/D/D =FGAF | G/G/G/ BA cGBG | egdg BGG :: g | dgBg A/A/A g2 | dgBg dgBg | 
 a/g/f/e/ gc A/A/A g2 | egdg BGG :|  