Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['c B>GG G2 B ded d2 c', 'BGE EDE']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 c | B>GG G2 B | ded d2 c | BGG GBd | e3 g3 | GBd gfe | edc cBA | BGE EDE | c3 ed :| z | BGE EDE | 
 GED D2 c | BGE EDE | c3 edc | BGE EDE | GED D2 c | BAG AGF | G3 G2 :|  