Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:4/4
K:G
['de ga', 'ge dB']  
X:1
L:1/8
M:4/4
K:G
 BA | GA Bd dB de | ga ge de ga | ba ge dB GA | BA AG Ac BA | GA Bd dB de | ga ge de ga | 
 ba ge dB Ac | AG GF G2 :: (3efg | af d^c d2 ga | be ed e2 ga | bg (3agf ge dB | BA AG Ac BA | 
 GA Bd dB de | ga ge de ga | ba ge dB AB | G2 GF G2 :|  