Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:3/4
K:C
['cd ed ce dc Bd BG cd', 'G2 FE']  
X:1
L:1/8
M:3/4
K:C
 cd ed ce | dc Bd BG | cd ee ce | dB G4 :: GA G2 FE | FG A2 GF | EF G2 FE | DB, C4 :|  