Create a composition based on the provided motif while adhering to the necessary musical structure.
X:1
L:1/8
M:3/4
K:G
['GB d2 edcD G2']  
X:1
L:1/8
M:3/4
K:G
 GB | d2 edcD | G2 BDcD | [AD]4 GB | d2 edcD | G2 BDAD | G4 :|  