The first lead by Brian
Then he joined the Trish and Taylor mean girl club
Then he joined the Trish and Brittany mean girl club 2
The final one was TJ and Shinji
These are the ones I am certain about. TJ was just a follower during the first three, he lead the last one with Shinji.
It just shows what bad character TJ has, lying so brazenly about trying to be Tay's friend, claiming to have been always nice to her, and then pretending Tay backstabbed him.
It's also funny that he only started calling Tay a betrayer after she called him out on his weak Lubecooch defense.
He also called Tay schizo for carrying her belonging with her, when he himself was in the mean girl meeting plotting to fuck with Tay's personal stuff.