Develop melodies adhering to the specified musical structure and using the offered theme.
X:1
L:1/8
M:2/4
K:G
['G B>BBA G2 G2 d2 dc B2']  
X:1
L:1/8
M:2/4
K:G
 G | B>BBA | G2 G2 | d2 dc | B2 z G | e>eee | d2 G2 | B2 AA | G2 z |]  