Create a composition based on the provided motif, following the specified musical structure.
X:1
L:1/8
M:2/2
K:Bb
['B2 dB fBdB gBaB bBAB FBAB GcBc', 'B2 dB fBdB'  
X:1
L:1/8
M:2/2
K:Bb
|: B2 dB fBdB | gBaB bBAB | FBAB GcBc | AecA BAGA | B2 dB fBdB | gBaB bBAB | FBAB GcBc | 
 AecA BFGA :: B2 dB fBdB | bagf =egfd | B2 dB fBdB | AecA FAcA | B2 dB fBdB | bagf =egfd | 
 B2 dB fBdB | AecA BFGA :|  