Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
Q:1/2=80
M:2/2
K:Dmin
['f cF F/F/F cFcF AF F/F/F c2', 'Fffg fdcA', 'BcB F2 E D2 F B3 Bcd', 'F3 ded ded']  
X:1
L:1/8
Q:1/2=80
M:2/2
K:Dmin
 f | cF F/F/F cFcF | AF F/F/F c2 Ac | BG G/G/G BGBG | BG G/G/G c2"^*" A :: Fffg fdcA | Fffg fdcA | 
 Ggga gfed | Ggga gfed | Fffg fdcA | Fffg edcf | (e/f/g) dg (e/f/g) dg | e/f/g dg e2 d2 |] 
[M:6/8][K:Bb][Q:3/8=110] BcB F2 E | D2 F B3 | Bcd cdB | ABG F3 | BcB F2 E | D2 F B3 | Bcd cdB | 
 f3 F3 :: ded ded | e2 c cde | ded cdB | ABG F3 | ded ded | efg f2 e | dcB FBA | B3 B,3 :|  