Grasshopper: divide a surface into grid and extract the curve boundary of each divided plane

The following tutorial helps you to divide a Plane surface with a UV grid and extract the boundary of each child(divided) planes separately.

Steps:

The desired surface is either created in grasshopper or one of the rhino surfaces is set to a node in grasshopper.
The divide node virtually divides the surface into desired parts & the Isotrim(Subsrf) node creates the divisions on the surface.
Then all the created divided surfaces are collected into one node called surface(srf)
Now its gets complicated,
-All the collected surfaces are listed into a List node (list item), where the list is grafted within then list node before being processed in the node
This list is now exploded for the edges using Explode node
After the explode node has run, the segments within the node should be grafted.
Then this grafted explode node is to be connected to a Graft node, where the list should be flattened before it runs through graft node.(not sure why grafting it within the explode node doesn't work, but it doesn't)

This gives us the boundary edges of each of the divided surface.

The below images show the application of above mentioned process to create the 3d surface shown below

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