Create chord structures that will improve the harmony of the provided musical section.
AG | FDDD DFAd | BGGF G2 ed | cAAA Aceg | fddc d2 :: ef | gagf g2 b2 | 
 abaf d2 fa | gece Aceg | fddc d2 :|  
X:1
L:1/8
M:2/2
K:D
 AG |"D" FDDD DFAd |"G" BGGF G2 ed |"A" cAAA Aceg |"D" fddc d2 :: ef |"G" gagf g2 b2 | 
"D" abaf d2 fa |"A" gece Aceg |"D" fddc d2 :|  