Create a composition using the given motif and incorporating the alphabet-based structure.
X:1
L:1/4
M:4/4
K:G
['B G']  
X:1
L:1/4
M:4/4
K:G
 d d B2 | d d B G | d d B G | e2 B G | d/d/ d e e/e/ | d2 B G | d2 e2 | d2 B2 | d d B G | d d B G | 
 z (3d3/4d/4d/ g2 |]  