Construct a musical arrangement using the specified alphabetical sequence and the given motif as a foundation.
X:1
L:1/8
M:12/8
K:G
['', 'B2 c', 'ded cAF G3']  
X:1
L:1/8
M:12/8
K:G
 D |: GDG B2 d c2 A F2 D | GDG B2 c d2 g B2 c | dge =f2 d cAG FGA |1 ded cAF G3 G2 D :|2 
 ded cAF G3 GBd |] g2 d B2 d c2 A F2 D | g2 d B2 c d2 e =f2 e | dge =f2 d cAG FGA |1 
 ded cAF G3 GBd :|2 ded cAF G3 G2 |]  