Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:4/4
K:G
['B/c/ dd BG', 'G3 D/E/ FA cA FD>EF GG AB']  
X:1
L:1/8
M:4/4
K:G
 B/c/ | dd BG FD>EF | GG AB c3 B/c/ | dd BG FD>FG | A>B GG G3 || D/E/ | FA cA FD>EF | 
 GG AB c3 B/c/ | dd BG FD>FG | A>B GG G3 ||  