Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
M:6/8
K:G
['GGG G2 A B3 dBA', 'e2 f']  
X:1
L:1/8
M:6/8
K:G
 B3 A2 B | GGG G2 A | B3 dBA | BGB AGA | B2 B BAB | GGG G2 A | B3 dBA | BGG G2 D :: g3 gfe | 
 dBc dBd | gfg bge | dBd e2 f | g3 gfe | dBc def | gfe fdB | ABd e2 f | g3 g2 e | dBd dBd | 
 gfg bge | dBd e2 f | g2 a g2 e | dBd def | gfe fdB | ABd efg |]  