Share 'Overlapping shapes - data flow problem'

Hi   I am relatively new to Grasshopper and suffering the stumbling block of trying to tease out the data I want from the flow.  I want to find the emergent shapes that are a result of a grid of overlapping polygons.   I am thinking I want to use the Region Intersection box but having trouble feeding in the correct items to get out what I want. I thought I should take the list of polygons and for…