Construct a piece of music using the designated motif as the basis, while ensuring the required form is followed.
X:1
L:1/8
M:4/4
K:Amix
['efec a2']  
X:1
L:1/8
M:4/4
K:Amix
 c | efec a2 cd | efec fBBc | efec a2 ed | ceBd cAAf :|  