Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/4
M:3/2
K:G
['B G G E', 'B d']  
X:1
L:1/4
M:3/2
K:G
 B G G E G2 | B G G E F A | B G G E G B | A B A G F A :: G B d c B2 | G B d c B d | e d c B c B | 
 A3/2 B/ A/B/A/G/ F3/2 A/ :|  