Create a musical composition using the given motif and adhering to the specified alphabetical musical form.
X:1
L:1/8
Q:1/8=170
M:12/8
K:G
['B3 BAB', 'dBd efg aga']  
X:1
L:1/8
Q:1/8=170
M:12/8
K:G
 A | B3 BAB G2 B A2 G | B3 BAG A2 B cBA | B3 BAB GAG GBd | g2 e dBG A2 B cB :| z | g3 dBd e3 dBd | 
 efg aga bab afd | g3 dBd ede dBd | efg aga bgf g2 :|  