Develop melodies adhering to the specified musical structure and using the offered theme.
X:1
L:1/8
M:2/4
K:G
['z2 ^c d z2']  
X:1
L:1/8
M:2/4
K:G
 D | BB/A/GG | d/e/d/c/BB | A>AG/F/E/D/ | dBGB | A>BAA | d/^c/d/c/d=c | B>Bd/c/B/A/ | GB/A/GB | 
 c z2 ^d | e z2 g | d>Bd/c/A/B/ | G z2 ^c | d z2 ^c | d z2 d | B>BAA | G z2 |]  