How to draw an image showing different-sized "threaded" black circles?

I want to draw an image showing seven different-sized black circles (from big to small or other ordering), which are positioned by threadening them on an invisible line. In the easiest case, it is a vertical line in the middle of the image. In this case, the image would show a stack of circles. In the next step, the position of circles should be changeable by manipulating the line (e.g., a horizontal thread or a curve by a function). Moreover, it should also be possible to change the ordering of the circles and the distance between them.

Can anybody help me with this assignment? I already found the function "Create Line Plot with Markers", but its functionality does not meet my expectations. Thanks for your help!

Answer 1

[KALYAN ACHARJYA]

Please modify as per your requirements

rectangle('Position',[2 2 4 4]);
hold on;
rad=linspace(0.3,0.1,8)
for i=1:8
viscircles([4,2.5+i/2.5],rad(i),'Color','k')
end 
axis off