Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
['BGdB gdBd cAaf gedc', 'G2 Bc dcBA GBdg e2 c2 c2']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
 GA | BGdB gdBd | cAaf gedc | BGdB gdcB | AGFE DFAc | BGdB gdBd | cAaf gedc | BdGB AcFA | 
 G2 G2 G2 :: Bc | dcBA GBdg | e2 c2 c2 cd | ecBc Adfa | f2 d2 d2 dc | BGDG BGdB | AFDF AFcA | 
 BGdB cAGF | G2 G2 G2 :|  