Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:6/8
K:D
['D2 D', 'BGd BGd AFd AFd']  
X:1
L:1/8
M:6/8
K:D
|: D2 D D2 D | A2 A A2 A | ABc dcB | ABG FEF | D2 D D2 D | A2 A A2 A | B2 B cBc | d3 D3 :: 
 BGd BGd | AFd AFd | BGd BGd | AFd AFd | BGE BGE | AFD AFD | B2 B cBc | d3 D3 :|  