Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/4
M:2/2
K:F
['a a', 'c c'  
X:1
L:1/4
M:2/2
K:F
 a | a f b a | g2 f2 | c f f g | a/g/a/b/ a a | a f b a | g2 f2 | c f f g | a3 :: c | c d B c | 
 A2 B2 | c c B A | G/F/G/A/ G c | c d c B | A2 B2 | c/B/A/G/ G3/2 F/ | F3 :|  