Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/4
M:4/4
K:C
['d c/B/A/G/', 'g f']  
X:1
L:1/4
M:4/4
K:C
 g/f/ | e g d g | c g B g | f/e/d/c/ B d | c/B/A/G/ G c/B/ | A c G c | F d c/B/A/G/ | F/G/ A D G | 
 E D/C/ C z || G/A/G/F/ E C | E/F/ G G c | B/c/ d d/e/d/c/ | B G G2 | g f g f | e/f/g/e/ d/c/ B | 
 a a g f | f/g/f/e/ d g | e d/c/ a c | f a a g/f/ | e/d/e/c/ d c/B/ | c c c ||  