Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:2/4
K:Dmin
['d3 e', 'd3 e']  
X:1
L:1/8
M:2/4
K:Dmin
 d3 e | d/e/d/c/ de | f>gfe | dA d2 | d3 e | d2 de | f>gfe | d4 :: d3 e | d/e/d/c/ de | c>dcB | 
 cB/A/ G4 | d3 e | d2 de | c>dcB | c4 :|  