Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:4/4
K:G
['dBGB c2', 'gdBd edBd']  
X:1
L:1/8
M:4/4
K:G
|:"^A" BA | G2 GB dBGB | c2 ce dBGB | c2 ec B2 dB | A2 A2 A2 BA | G2 GB dBGB | c2 ce dBGB | 
 gfge dcBA | G2 F2 G2 ::"^B" d2 | gdBd edBd | gdBd edBd | c2 ec B2 dB | A2 A2 A2 BA | G2 GB dBGB | 
 c2 ce dBGB | gfge dcBA | G2 F2 G2 :|  