Construct a piece of music using the designated motif as the basis, while ensuring the required form is followed.
X:1
L:1/8
Q:1/2=100
M:2/4
K:D
['A3 c', 'A3 (ecBA) BA Bf (ecBA) c3 f'  
X:1
L:1/8
Q:1/2=100
M:2/4
K:D
 E | A3 c | BABc | A3 c | e3 a | A3 c BABc | A(FED) | A3 :: (ecBA) | BA Bf | (ecBA) | c3 f | 
 (ecBA) | BG Bd | (AFFE) | A3 :|  