Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
Q:1/2=90
M:4/4
K:D
['(3(ABc) dAFA GBAG FAFA GBAG', 'd2 (cd) ecAc ecge fdAd fdfd ecAc']  
X:1
L:1/8
Q:1/2=90
M:4/4
K:D
 (3(ABc) | dAFA GBAG | FAFA GBAG | FDFD GEGE | FDFD E2 (3(ABc) | dAFA GBAG | FAFA GBAG | 
 FAdf fdec | d2 d2 d2 :: (cd) | ecAc ecge | fdAd fdfd | ecAc ecgf | edcB A2 A2 | BGDG BGdB | 
 AFDF AFdA | BdcB AGFE | d2 d2 d2 :|  