Develop diverse chord patterns to increase the melodic richness of the submitted musical excerpt.
[fd] f g a | a3/2 g/ f e | d d e f | f3/2 e/ e2 | [fd] f g a | 
 a3/2 g/ f e | d d e f | e3/2 d/ d2 | e e f d | e f/g/ f d | 
 e f/g/ f e | d e A2 | f f g a | a3/2 g/ f e | d d e f | e3/2 d/ d2 ||  
X:1
L:1/4
M:4/4
K:D
"D" [fd] f"G" g a |"A" a3/2 g/ f e |"D" d d e f | f3/2 e/"A" e2 |"D" [fd] f"G" g a | 
"A" a3/2 g/ f e |"D" d d"A" e f | e3/2 d/"D" d2 |"A" e e"D" f d |"A" e f/g/"D" f d | 
"A" e f/g/"D" f e | d e"A" A2 |"D" f f"G" g a |"A" a3/2 g/ f e |"D" d d"A" e f | e3/2 d/"D" d2 ||  