Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:4/4
K:Gmin
['B2 dB ecAc ABdf bfdB', 'B2 bB aBgB f2 =ef afdB']  
X:1
L:1/8
M:4/4
K:Gmin
 B2 dB ecAc | ABdf bfdB | e2 Ge d2 Fd | c2 Ec BAGA | B2 dB ecAc | ABdf bfdB | egce dfBd | 
 cf=ef af_ec || B2 bB aBgB | f2 =ef afdB | AFeF dFcF | ABcd ecAc | B2 bB aBgB | f2 =ef afdB | 
 egce dfBd | cf=ef af_ec ||  