harry potter - What Are the Other Four Exceptions to Gamp's Law of Elemental Transfiguration?

In reading Why does the Aguamenti spell work? question, Gamp's Law of Elemental Transfiguration came up in DVK's answer.

‘It’s quite straightforward, really,’ said Neville modestly. ‘I’d been in here about a day and a half, and getting really hungry, and wishing I could get something to eat, and that’s when the passage to the Hog’s Head opened up. I went through it and met Aberforth. He’s been providing us with food, because for some reason, that’s the one thing the Room doesn’t really do.’

‘Yeah, well, food’s one of the five exceptions to Gamp’s Law of Elemental Transfiguration,’ said Ron, to general astonishment.

_{Deathly Hallows - page 465 - Bloomsbury - chapter 29, The Lost Diadem}

I personally suspect money is one of the exceptions due to two examples given in the books. In Goblet of Fire, Leprechaun gold disappears after a brief period of time (granted, it could simply be charmed to do so). In Deathly Hallows, in the Lestranges' vault, the Gemino Curse, which causes whatever treasure that is touched to multiply almost infinitely, but the copies are worthless.

‘They have added Gemino and Flagrante Curses!’ said Griphook. ‘Everything you touch will burn and multiply, but the copies are worthless [...]’

_{Deathly Hallows - pages 433-434 - Bloomsbury - chapter 26, Gringotts}

For the five exceptions to Gamp's Law of Elemental Transfiguration, so far I know and have guessed at food and money respectively:

1) Food

2) Money?
3) ?
4) ?
5) ?

What are the other four exceptions to Gamp's Law of Elemental Transfiguration?

_{NOTE: I'm looking for a canon-based answer (books, JKR, Pottermore, and the like). I do not prefer answers from the HP Wikia or the Wikipedia. Thoughtful subjective answers in the spirit of canon are fine.}

Answer

There's very little explicitly stated about the mechanics of Rowling's "Potterverse". The five exceptions to Gamp's Law of Elemental Transfiguration are taken to be things that cannot be conjured from nothing or transfigured from unrelated items. The only exception given any real attention is food, as you have stated. The other four are left up for speculation.

• Love - While hardly a substance one can think to have a physical presence, love is considered one of the exceptions to Gamp's Law as it is impossible to create using magic. Obsession or extreme infatuation can be created with so-called "love potions", but they are nothing close to the real thing.



• Old Life - Interestingly enough, new life can be created through magic, birds from the Avis charm for example, but dead is dead in the Potterverse.
  

  
  

  Even one of the Hallows, a legendary magic item, can only conjure a wraith and not actually bring someone back to life.

  
  

  
  

These two are that make the most immediate sense and explicitly said in the book to impossible to conjure through magic, although not stated as exceptions to Gamp's Law. There is speculation on other exceptions (such as precious metals and clothing), but nothing substantive.