Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/16
Q:1/4=120
M:4/4
K:G
['G2G2 FGAF GABc d2B2 e2ce', 'd2B2 e2ce']  
X:1
L:1/16
Q:1/4=120
M:4/4
K:G
|: D2 | G2G2 FGAF | GABc d2B2 | e2ce d2G2 | ABAG E2D2 | G2G2 FGAF | GABc d2B2 | e2ce dBGB | 
 A2F2 G2 :: f2 | g2eg f2d2 | e2ce d2B2 | e2ce d2G2 | ABAG E2D2 | G2G2 FGAF | GABc d2B2 | 
 e2ce dBGB | A2F2 G2 :|  