geometry - Join all circles together only with 6 lines

In the below image, can you draw 6 straight lines that pass all the circles?
As soon as you start drawing lines you can't take your pen up until you draw all six lines.
hint: you don't have to keep the polyline inside the square.

Edit: Best answer is the one in which straight line passes center of the circles.

Answer

I think this is one possible solution: