Create a composition using the given motif and incorporating the alphabet-based structure.
X:1
L:1/8
M:4/4
K:Bb
['F B2 BB _d2 cB f3 c']  
X:1
L:1/8
M:4/4
K:Bb
 F | B2 BB _d2 cB | f3 c c2 z c | _d3 d e3 e | f6 z f | f3 B B2 cd | e2 e2 z3 e | e2 FF F2 GA | 
 B6 z |]  