Divide surface

i want to divide a surface like attached image.can anybody help me.plz

divide surface.3dm (248.1 KB)
divide surface.gh (10.5 KB)

Check this

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There are holes in this approach (below):


divide_surface_2019Oct12c.gh (39.0 KB)

thank you so much it was so helpful and i am working on it to simplify it

thank you so much Joseph.can you tell me how can i fill the gap between the all parts with same pattern.also would you tell me how to fix the definition when i scale the top ellipse and make it large.