Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:6/8
K:Bb
['BFB dcB cAF', 'F Bdf fdB']  
X:1
L:1/8
M:6/8
K:Bb
 F | BFB dcB | cAF e3 | dcB A/B/cA | BFD B,2 D | BFB dcB | cAF cde | dcB FBA | (B3 B2) :: F | 
 Bdf fdB | ceg g2 F | Bdf fdB | Acc c2 F | Bdf fdB | cba b2 e | dcB FBA | BFD B,2 :|  