Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:3/8
K:G
['A B']  
X:1
L:1/8
M:3/8
K:G
 G | G2 B | d2 d | A B A | F D F | GA B | c2 B | c3 B | A2 G | G A B | d2 d | A B A | F D F | 
 G A B | c2 B | AG .A | G2 z |]  