Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:6/8
K:G
['BDG Bdg b^ab gdB cBc', "g3 gg/a/b c'2 a a^ga b2 g"]  
X:1
L:1/8
M:6/8
K:G
|: d2 c | BDG Bdg | b^ab gdB | cBc ABc | dBe dBG | BDG Bdg | b^ab gdB | cBc Aaf | g3 :: gg/a/b | 
 c'2 a a^ga | b2 g gfg | a2 c cBc | dBe dBg | caa a^ga | bgg gfg | afd c'fa | g3 :|  