Compose a piece featuring the specified motif and using an alphabet-based arrangement.
X:1
L:1/8
M:2/4
K:Amix
['AB cd ef e>f ed cB', 'e>f ed']  
X:1
L:1/8
M:2/4
K:Amix
|: AB cd | ef e>f | ed cB | AB cA | AB cd | ef e>f | ed cB |1 A2 AB :|2 A2 Af/g/ |: af ge | 
 fd e>f | ed cd | ed e/f/g | af ge | fd e>f | ed cB |1 A2 Af/g/ :|2 A2 AB ||  