Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:4/4
K:Cdor
['', 'B,DFD EB,EF G2 FE DFBF dFBF', 'DFBF dFBF E2']  
X:1
L:1/8
M:4/4
K:Cdor
[K:Bb]|: BA | B2 FD B,DFD | EB,EF G2 FE | DFBF dFBF | ABcB AFAc | BGFD B,DFD | EB,EF G2 FE | 
 DFBF dFBF | ABcA B2 :: FE | DFBF dFBF | E2 BE cEBE | D2 BD cDBD | ABcB AFAc | DFBF dFBF | 
 E2 eE dEcE | ABcB AFAc | AFAc B2 :|  