Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
Q:1/4=180
M:4/4
K:Amin
['AB c2', 'B4 AB c2 dcBA c2 B2']  
X:1
L:1/8
Q:1/4=180
M:4/4
K:Amin
|:"Am" AB c2 d2 e2 | cded dcBA | AB c2 dcBA | c2 B2 A4 ::"Am" ABcd"G" .B2 .B2 |"Am" ABcd"G" B4 | 
"Am" AB c2 dcBA | c2 B2 A4 :|  