Develop a melody while staying within the specified chord structure.
'D', 'D', 'A', 'D', 'A', 'D', 'D', 'G', 'D', 'D', 'G', 'A', 'D'  
X:1
L:1/8
M:4/4
K:D
 DE |"D" F2 F2 FEDF | A2 B2 AFDE |1,3"D" F2 F2 ABAF |"A" EDEF E2 :|2,4"D" F2 F2"A" FDEF | 
"D" D3 E D2 :: (3ABc |"D" d2 de dcBA |"G" B2 B2"D" AF A2 |1,3"D" d2 de dcBA |"G" BABc B2 :|2,4 
"A" A2 AB AF E2 |"D" D3 E D2 :|  