Build a musical arrangement using the indicated alphabet-based system and the given motif.
X:1
L:1/8
M:6/8
K:Bmin
['BBB BAB', 'FFF EFA cBA c2 e Bcd efe']  
X:1
L:1/8
M:6/8
K:Bmin
|: BBB BAB | FAB A2 f | ecA ABc | B2 A F2 E | BBB BAB | AFE Ace | fff fec |1 BBB B2 A :|2 
 BBB ABc |: efe e2 c | B2 A FFF | EFA cBA | c2 e Bcd | efe e2 c | B2 A FFF | BcB A2 E | FFF F2 z :|  