Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:4/4
K:D
['D/D/D AF A2 FA', 'd2 Ad', 'deBd ABdF E/E/E']  
X:1
L:1/8
M:4/4
K:D
 D/D/D AF A2 FA | BdAB AFEF | D/D/D AF A2 FA | BdAF E/E/E EA :| dfef{e} d2 AB |{Bcd} d2 Ad fede | 
 faef d2 Ad | BdAF E/E/E EA | dfef d2 AB | d2 Ad fede | faef defd | AFdF E2 || 
"^Variation on the last phrase of the B part." faef deBd | ABdF E/E/E E2 ||  