Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/4=80
M:2/4
K:F
['A/B/c cc c3 B AF', 'AF FG']  
X:1
L:1/8
Q:1/4=80
M:2/4
K:F
 A/B/c cc | c3 B | AF FG | E2 C2 | A/B/c cc | c3 B | AF GE | F3 G :| AF FG | AF BG | AF FG | 
 E2 C2 | AF FG | AF BG | A/G/F GE | F4 :|  