Create a composition based on the provided motif while adhering to the necessary musical structure.
X:1
L:1/8
M:12/8
K:Bmin
['FBB B2 c d2', 'f3 gfe'  
X:1
L:1/8
M:12/8
K:Bmin
|: FBB B2 c | d2 d c3 | dBB B3 | cFF F3 | FBB B2 c | d2 e f3 | f2 f edc | B3 B3 :: dcB B2 c | 
 d2 e f3 | gfe f3 | gfe f3 | d2 c Bcc | dde f3 | gfe fec | B3 B3 :|  