Develop melodic lines utilizing the given motif according to the designated arrangement.
X:1
L:1/8
M:4/4
K:Bb
['dc BF DF Bc de fg fd', 'ga bg fd Bd'  
X:1
L:1/8
M:4/4
K:Bb
 dc | BF DF Bc de | fg fd B2 cd | eg bg fd Bd | gf dB c2 dc | BF DF Bc de | fg fd B2 cd | 
 eg bg fd Bd | c2 B2 B2 :: ba | g^f ga g=f de | fg fd f2 ba | ga bg fd Bd | cd cB GF DC | 
 B,F =EF DB AB | Fd ^cd Bf =ef | ga bg fd Bd | c2 B2 B2 :|  