Develop melodies utilizing the stated letter notation and the provided theme.
X:1
L:1/4
M:2/4
K:A
['e c', 'c e A e B']  
X:1
L:1/4
M:2/4
K:A
|: e3/2 a/ e c | B3/2 A/ B c | d3/2 c/ d e | f g a f | e f e c | f g a f | e c B c | A A/A/ A2 :: 
 c e A e | B e ^d e | c e A e | B E E2 | c e A e | B ^d f a | g f e ^d | e e/e/ e2 :|  