Develop melodies utilizing the stated letter notation and the provided theme.
X:1
L:1/8
M:4/4
K:G
['G3 F EDEF', 'd4 e3 d cBce d2 Bc A4']  
X:1
L:1/8
M:4/4
K:G
|: G3 F EDEF | GABc B2 A2 | G3 F EDEF | GABc d4 :: e3 d cBce | d2 Bc A4 | G3 F EDEF | GABc d4 :|  