Number Two of Three?

Hellooo, so I've been digging through the Swans catalogue recently and I've been made aware that there has been somewhat of a 'trilogy' of songs/albums that has stretched through over 20+ years before it was completed. I'm aware that the first of the first of this trilogy is 'Number One of Three' by The Body Lovers, and the third and final part of the trilogy is 'The Beggar Lover (Three)' off The Beggar. However, I've seen conflicting answers on what the second part of this trilogy actually is.

I've seen some people say it's '34.13' from The Body Haters, and others have said it's 'Look at me Go', a bonus track on the tour CD of 'My Father Will Guide Me Up a Rope to the Sky'. Can anyone please give me a concrete answer on which of these two projects are actually Number Two of Three? Thank you.