Construct a piece of music using the designated motif as the basis, while ensuring the required form is followed.
X:1
L:1/4
M:5/4
K:G
['B c']  
X:1
L:1/4
M:5/4
K:G
 d | G F G A B | c B A B c | d e =f d3/2 c/ | B A G2 d | G F G A B | c B A B c | d g d3/2 c/ B | 
 A A G2 G | d e =f2 d |[M:6/4] =f g f/e/ d z g |[M:5/4] =f e d3/2 c/ B | c d A2 d | G F G A B | 
 c B A B c | d g d3/2 c/ B | A A G2 |]  