Design musical structures with the specified pattern and offered motif.
X:1
L:1/8
M:2/4
K:A
['A>B cA BA', 'e>f ec BA'  
X:1
L:1/8
M:2/4
K:A
 A>B cA | BA cA | A>B cA | BA F2 | A>B cA | BA ce | A>B AF | FE E2 :: e>f ec | BA Bc | e>f ec | 
 BA F2 | e>f ec | BA Bc | A>B AF | FE E2 :|  