Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['d2 d']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
 B2 B BAG | c2 c cBA | d2 d dcB | AGA B2 G | B2 B BAG | c2 c cBA | d2 d dcB | AGF G3 d2 d gBc | 
 d2 d gBc | d2 d g2 f | e2 d ^c2 A | f2 f fed | g2 g gfe | a2 a agf | ed^c d3 | B2 B BAG | 
 c2 c cBA | d2 d dcB | AGA B2 G | B2 B BAG | c2 c cBA | d2 d dcB | AGF G3 |]  