Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/8
M:2/4
K:G
['d2 d2 d3 e =f>e dc d>c', 'G2 A2 d3 c A>c Ac'  
X:1
L:1/8
M:2/4
K:G
 d2 d2 | d3 e | =f>e dc | d>c AB | c2 c/d/c/B/ | c3 d | e>d cB | A4 :: G2 A2 | d3 c | A>c Ac | 
 BG d/c/B/A/ | G2 A2 | d3 c | A>c Ac | B4 :|  