Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:9/8
K:G
['d2 c BGB', 'GBd gdB']  
X:1
L:1/8
M:9/8
K:G
 d2 c BGB BGB | d2 c BGB cBA | d2 c BGB BGB | cBc A2 B cBA :: GBd gdB gdB | GBd gdB cBA | 
 GBd gdB gdB | cBc A2 B cBA :|  