Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
Q:1/4=100
M:4/4
K:G
['G GBBd dcBd cB AG/F/ G3 D', 'd d gf/g/ ef/g/ fe/f/ d2 ed/e/']  
X:1
L:1/8
Q:1/4=100
M:4/4
K:G
 G | GBBd dcBd | cB AG/F/ G3 D | GBBd cBAf | f/a/f/d/ e/g/e/^c/ | d2- d :: d | 
 gf/g/ ef/g/ fe/f/ d2 | ed/e/ cd/e/ dc/d/ B2 | cBAG FE/D/ Gc | B/d/B/G/ A/c/A/F/ | G2- G :|  