Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
Q:3/8=120
M:6/8
K:G
['gdc B2 G', 'dBB GBB']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:G
 c | BGB cde | gdc B2 G | cec dBg | cAA A2 c | BGB def | gdc B2 G | Aag fef | gGG G2 :| c | 
 dBB GBB | dBB GBB | cAA FAA | cAA FAA | dBB ecc | fdd gee | dBB cAf | gGG G2 :|  