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
['dFF AFF DFF AFF', 'dff aff']  
X:1
L:1/8
M:6/8
K:D
 dFF AFF | DFF AFF | dFF AFE | FBB B2 c | dFF AFF | DFF AFF | dcB AFE | FBB B2 A :| dff aff | 
 bff aff | dff aff | abb b2 f | dff aff | bff afe | dcB AFE | FBB B2 c :|  