How to deploy surfaces onto an existing triangular wireframe?

Hello everyone! I'm very very new to GH and need some help here.

I've got a rather messy set of triangular wireframe. I'd like to add a triangular surface to every three intersected lines within. How can I achieve it with grasshopper?

For example something like this:

I know this may seem like some sort of ridiculously easy task for you guys......but please give any advice to me:)

A lot of thanks in advance!

Minquan