Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:3/2
K:F
['f2 c4 Bc A2 F2 d2 Bd', 'F4 cfaf bagf e2 c2 Bdgd gfed', 'F4 f2 c2 _egfe dBAB g2 d2']  
X:1
L:1/8
M:3/2
K:F
 f2 c4 Bc A2 F2 | d2 Bd GB DF E2 C2 | DGBA GFED C2 c2 | AFEF CFEG F4 :: cfaf bagf e2 c2 | 
 Bdgd gfed c2 B2 | Acfc fedc B2 c2 | AFEF CFEG F4 :: f2 c2 _egfe dBAB | g2 d2 fagf =ecBc | 
 a2 e2 fagf edcB | AFEF CFDG F4 ::  