Build a musical arrangement using the indicated alphabet-based system and the given motif.
X:1
L:1/8
M:4/4
K:Bb
['c2 c2']  
X:1
L:1/8
M:4/4
K:Bb
 FF | B2 B2 c2 c2 | dc B2 z2 BB | c2 c2 d2 d2 | c4 z2 FF | B2 B2 c2 c2 | dc B2 z2 BB | 
 c2 c2 d2 d2 | c4 dcBA | G2 A=B c2 d2 | e4 e2 dc | cBAG F2 GA | B4 dcBA | G2 A=B c2 d2 | e4 e2 dc | 
 cBAG F2 GA | B4 z2 |]  