Create melodies that conform to the specified chord modifications.
'F', 'Bb', 'F', 'C7', 'F', 'Bb', 'C7', 'F', 'F', 'C', 'G7', 'C7', 'F', 'G7', 'C7', 'F', 'G9', 'C7', 'F', 'Bb', 'C7', 'F'  
X:1
L:1/8
M:4/4
K:F
 A |"F" F2 CD"Bb" F2 d2 |"F" cAFA"C7" GEDC |"F" F2 CD"Bb" F2 d2 |"C7" cABG"F" F3 :| A | 
"F" c2 AB c2 f2 |"C" egec"G7" dfd=B |"C7" c2 AB"F" c2 f2 |"G7" efd=B"C7" c3 |] d |"F" cfed cBAF | 
"G9" A2 AF"C7" GEDC |"F" F2 CD"Bb" F2 d2 |"C7" cABG"F" F3 |]  