Removing sub-lists less than 3 elements

Hi all,

I am a mechanical design engineer and I'm new to visual scripting as it was reccomended in the other communities. I really like it and I think its very powerful.

This is the shape I am currently creating

I am having a  problem trying to do things and I was wondering if anyone could help, I want to be able to remove sub sets that have less than 2 items in them. This is what I came up with but it just returns errors.