Formulate chord combinations to increase the harmonic complexity of the specified musical excerpt.
(3(A/B/A/) |: FF A>F | GG A>G | cc G2 | F/G/A/B/ A(3(A/B/A/) | FF A>F | GG A>G | 
 cc B>c |1 dd d(3(A/B/A/) :|2 dd dA |: c>A e>A | f2 f/e/d/c/ | B !>!A2 c | 
 d/c/d/e/ fA | c>A e>A | f2 f/e/d/c/ | BA f>e |1 dd dA :|2[K:G] dd d z |: 
 G>A BG | e3 B | d>"_c"c A>G | F4 | AB"_c" cA | f3 e | d>"_c"c B>A |1 Ge d2 :|2 
 Gg g z |]  
X:1
L:1/8
M:2/4
K:D
 (3(A/B/A/) |:"D" FF A>F |"A7" GG A>G | cc G2 |"D" F/G/A/B/ A(3(A/B/A/) | FF A>F |"A7" GG A>G | 
 cc B>c |1"D" dd d(3(A/B/A/) :|2"D" dd dA |:"A7" c>A e>A |"D" f2 f/e/d/c/ |"A7" B !>!A2 c | 
"D" d/c/d/e/ fA |"A7" c>A e>A |"D" f2 f/e/d/c/ |"A7" BA f>e |1"D" dd dA :|2[K:G]"D" dd d z |: 
"G" G>A BG | e3 B |"D7" d>"_c"c A>G | F4 | AB"_c" cA | f3 e | d>"_c"c B>A |1"G" Ge d2 :|2 
"G" Gg g z |]  