Construct a musical composition following the designated musical form and incorporating the given motif.
X:1
L:1/8
M:6/8
K:G
['', 'G B'  
X:1
L:1/8
M:6/8
K:G
 D |] G G G B c d | e d c B2 G | A2 A (Ac) B | A2 F D2 D | G A G B A G | B c d g f/ e/ | 
 d2 c B2 A | d2 B G2 |]  