Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
['A2 G', 'f2 c']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
 c | A2 G A2 G | FcA F2 c | d2 c d2 e | fed c2 c | fed cBA | dcB AGF | F2 E G2 F | FcA F2 :| c | 
 f2 c d2 c | def c2 A | f2 c d2 c | fed c3 | f2 c d2 c | def c2 A | f2 c g2 c | caf"^DC" c2 |]  