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
['D>dd dFG ABG FGE D>dd dFA GBA', 'FEF D z D DFA']  
X:1
L:1/8
M:6/8
K:D
 D>dd dFG | ABG FGE | D>dd dFA | GBA GFE | D>dd F>dd | E>dd D>dd | fdB AGF | EBA GFE :: FEF D z D | 
 DFA AGE | FEF D3 | fdB Bcd | FEF D z D | DFA AGF | G>BG F>AF | E>BA GFE :|  