Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:3/4
K:Eb
['B3 EG']  
X:1
L:1/8
M:3/4
K:Eb
 BBc | e3 fg e | e c2 ce e | e3 B c/B/ G | B3 EG G | G3 | EGB | F E2 EG B | B3 EG F | E3 ||  