Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/16
M:2/4
K:D
['z AFD', 'd2e2f2g2 fBB2 fBB2'  
X:1
L:1/16
M:2/4
K:D
{^G} A2 | z AFD E2D2 | z dfd ed z{c}d | z AFD E2DF | G>BA>F D2{^G} A2 | z AFD E2D2 | 
 z dfd ed z{c}d | z AFD E2DF | G>BA>F D2 :: (3ABc | d2e2f2g2 | fBB2 fBB2 | d2e2f2^g2 | 
 a>ef>d c>eA2 | d2e2f2g2 | fBB2 fBB2 | (a>.b)(g>.a) (f>.g)(e>.c) |1 (d>.f)(e>.d) cA :|2 
 (d>.B)(A>.G) FD ||  