Compose a piece by incorporating the set musical pattern in its alphabetical form along with the given melodic subject.
X:1
L:1/8
Q:1/2=80
M:2/2
K:Dmix
['D/D/D AF']  
X:1
L:1/8
Q:1/2=80
M:2/2
K:Dmix
 A | D/D/D AF ECCE | D/D/D AF BGAF | GBFA ECCc | B/c/d AF A2 A |:  