How to draw the section number of the rope around the movable pulley in the pulley block More detailed Oh! Had better have schematic diagram

How to draw the section number of the rope around the movable pulley in the pulley block More detailed Oh! Had better have schematic diagram

For vertically placed pulleys, if the number of segments of the rope is even, i.e. 2.4.6, etc., the drawing should start from the hook below the fixed pulley (draw small circle first, then draw large circle, move and move the fixed pulley alternately). If the number of segments of the rope is odd, i.e. 3.5.7, etc., the drawing should start from the hook above the driven pulley (also draw small circle first, then big circle, move and move the fixed pulley alternately)