Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:Bmin
['Bc dcBA BcdB G2 BG dGBG A2', 'Bf f2']  
X:1
L:1/8
M:4/4
K:Bmin
 Bc | dcBA BcdB | G2 BG dGBG | A2 cA eAcA | dcde f2 Bc | dcBA BcdB | G2 BG dGBG | A2 cA eAcA | 
 dcBA B2 :: Bc | Bf f2 dfBf | Bf f2 dfBf | Ae e2 ceAe | Ae e2 fedc | Bf f2 dfBf | Bf f2 fedc | 
 B3 A GABc | dBcA F2 :|  