Construct melodies utilizing the provided motif and adhere to the outlined musical structure.
X:1
L:1/8
M:2/2
K:Bb
['F2 B2 decd B2 FGFE EDEG D2'  
X:1
L:1/8
M:2/2
K:Bb
 F2 |"Bb" B2 d2"F7" decd |"Bb" B2 F2"F7" FGFE |"Bb" DFBF"Eb" EDEG |"F7" FGFE"Bb" D2 B,2 | 
"Bb" BFdB fdgf | bagf edcB |"F" Acfc"C7" BABd |"C7" cBAG"F" F2 :: f2 |"Bb" fbfd BdBF | 
"Eb" EDEF GFED |"Cm" C2 gf edcB |"F" ABcA"F7" F2 (3fga |"Bb" bfdf"Eb" gece |"Bb" dfBd"F" cA F2 | 
"F7" fgfe dcBA |"Bb" B2 d2 B2 :|  