Build a musical arrangement using the indicated alphabet-based system and the given motif.
X:1
L:1/16
M:2/4
K:G
['BGBd BGBd gfge dBGB ecdB cABG', 'dgBg dgBg dgba gfed']  
X:1
L:1/16
M:2/4
K:G
 (udc) | BGBd BGBd | gfge dBGB |"^4" ecdB cABG | E2A2A2 (dc) | BGBd BGBd | gfge dBGB | 
"^4" ecdB cABG | D2G2G2 :: ug2 | dgBg dgBg | dgba gfed | eaca eaca | e2(ag) fed^c | dgBg dgBg | 
 dgba gfed | eaba gfef | g2g2g2 :|  