Construct a musical work using the alphabet-based form and the provided motif.
X:1
L:1/16
M:2/4
K:G
['BcdB G2G2', 'g2g2g2g2 fgaf']  
X:1
L:1/16
M:2/4
K:G
 BcdB G2G2 | cdec A2A2 | BcdB G2G2 | ABcA B4 :: g2g2g2g2 | fgaf g2g2 | g2g2g2g2 | fgaf g4 :|  