Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
['Bc d3']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
 Bc | d3 B d3 B | c2 A4 Bc | d3 c B3 A | B2 G4 ef | gfed edcB | c2 A4 Bc | d3 c B3 A | B2 G4 |]  