Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:4/4
K:D
['F2 DB/c/', 'd/d/d f>d']  
X:1
L:1/8
M:4/4
K:D
 F2 DB/c/ d>AB>G | E2 =CA/B/ =c>GE>A | F2 DB/c/ d>AB>G | F2 DA/B/ c>Ad>G | 
 F2 DB/c/ d/c/B/A/ B/A/G/F/ | E2 =CA/B/ =c>GE>A | F2 DB/c/ d>AB>G | F2 D2 d>d d |: f | 
 d/d/d f>d g>ef>e | e/e/e g>e g>ec>e | d>ef>g a>ba>f | g<ea>g f>ed>f | d/d/d f>d g>ef>d | 
 e/e/e g>e g>e =cf/g/ | a>fg>e f>de>c | B/A/B/c/ d/c/B/A/ F>E D :|  