Create a musical composition using the given motif and adhering to the specified musical form represented by alphabet characters.
X:1
L:1/8
M:4/4
K:G
['B2 BABc dB', 'B d3']  
X:1
L:1/8
M:4/4
K:G
|: B2 BABc dB | A2 AGAc BA | B2 BABc dB | AGAB G3 A :| B d3 e2 dB | AGAB GE D2 | B d3 e2 dB | 
 AGAB G3 A | B d3 e d3 | g d3 ABAG | A2 AG ABcA | dBAB G3 A ||  