Compose a piece featuring the specified motif and using an alphabet-based arrangement.
X:1
L:1/8
M:12/8
K:A
['ecA ABA ABA', 'ecA aec ecA']  
X:1
L:1/8
M:12/8
K:A
 ecA ABA ABA f/g/af | ecA ABA ABA B/c/dB | ecA ABA ABA (f/g/a)f | edc dcB A3 a3 :: 
 ecA aec ecA fgaf | ecA aec ecA (e/f/=g)e | ecA aec ecA f/g/af | eaf ecB A3 a3 :|  