Construct melodies utilizing the provided motif and adhere to the outlined musical structure.
X:1
L:1/4
M:4/4
K:C
['E G']  
X:1
L:1/4
M:4/4
K:C
 z C E G | A2 G A | F G E C | z D E G | (c2 B) c | d B G2 | z G A B | (c2 B) c | A G E C | 
 z D E G | A2 G E | D D C ||  