Develop melodies utilizing the stated letter notation and the provided theme.
X:1
L:1/8
M:4/4
K:Dmix
['BG G2', 'd2 de']  
X:1
L:1/8
M:4/4
K:Dmix
|: c2 Ac BG G2 | A2 dB cAAB | c2 A/B/c BG G2 |1 AFGF D4 :|2 AFGF D3 E |: EGGA AGGB | GGcG BGAG | 
 EGGA AGGA |1 Adde dcAG :|2 Add^c d2 de |: f2 df gefd | c2 Ac ecde | f2 d/e/f gefd |1 
 cABc d2 de :|2 cABc d4 ||  