Build a musical arrangement using the indicated alphabet-based system and the given motif.
X:1
L:1/8
M:4/4
K:G
['B2 G2 G2', 'd g3']  
X:1
L:1/8
M:4/4
K:G
 dBGB dBed | cBAG F2 DE | FEFG A2 fe | decd B2 Bc | dBGB dBed | ^cdeg abag | fd^cd ed=cA |1 
 B2 G2 G2 Bc :|2 B2 G2 G2 z2 || d g3 dgfg | d g3 d c2 B | A3 B c3 e | agfe d2 Bc | d g3 dgfg | 
 d g3 d3 B | cBAc BAGB | AG (3FGA G2 Bc | dgbg egdB | cdeg a3 g | (3fgf (3efe defe | 
 (3ded cd B2 Bc | dBGB dBed | ^cdeg abag | fd^cd ed=cA | B2 G2 G2 ||  