Compose a piece by incorporating the set musical pattern in its alphabetical form along with the given melodic subject.
X:1
L:1/4
Q:1/2=120
M:2/2
K:G
['B G', 'G B']  
X:1
L:1/4
Q:1/2=120
M:2/2
K:G
 G/G/ G B G | c2 A F | G/G/ G B G | c2 B G | c2 B G | c2 A F | G/G/ G B G | c A d2 || G/G/ G B G | 
 A f A F | G/G/ G B G | B g B G | B g B G | A f A F | G/G/ G B G | c A d2 |]  