Construct melodies utilizing the provided motif and adhere to the outlined musical structure.
X:1
L:1/16
Q:1/8=128
M:4/4
K:Bb
['B2>d2 b2>a2 gfed c4']  
X:1
L:1/16
Q:1/8=128
M:4/4
K:Bb
|: B2>d2 b2>a2 gfed c4 | B2>d2 b2>c'2 d'2f2 g2b2 | B2>d2 b2>a2 gfed c4 | B2>D2 A,2f2 edcB d2f2 | 
 B2>d2 b2>a2 gfed c4 | B2>d2 b2>c'2 d'2f2 g2b2 | B2>d2 b2>a2 gfed c4 | B2>D2 A,2f2 edcB d2f2 | 
 d2>B2 F2>f2 edcB G4 | B,2B2 D2f2 edcB d2F2 | g2>f2 gabd fede c4 | F3G/A/ B3(3(def) edcB d2f2 | 
 d2>B2 F2>f2 edcB G4 | B,2B2 D2f2 edcB d2F2 | g2>f2 gabd fede c4 | F3G/A/ B3(3(def) edcB d2f2 :|  