aGrid = [] 
for r in range (0, 3, 1): 
    aGrid.append ([])
    for c in range (0, 3, 1): 
        coordinates = str(r)+str(c)
        aGrid[r].append(coordinates)

    print("Displaying new row (elements=[row,column]): ", end="")
    for c in range (0, 3, 1):
        print(" %s " %(aGrid[r][c]), end ="")
    print()
    input("Press enter to continue")

print("\nDisplaying whole list")
for r in range (0, 3, 1): 
    for c in range (0, 3, 1):
        print(" %s " %(aGrid[r][c]), end ="")
    print()