Well, I always say OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
OOOOOOOOOOOOOOOOOOOOOOOOOHHHHHHHHHHHHHHHHHHHHHHHGG GGGGGGGGGGGGGGGGGGGGGNNNNNNNNNNNNNNNNNNNNN, breath, EEEEEEEEEEEEEEERRRRRRRRRRRRRRRRRRRRRRRRRIIIIIIIIII GGGGEEEEEEEEEEEERRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR RR

Only all the way through every contraction though.

I've also said:
Don't touch me
Hot
Drink
Good (in response to cold washer/good touch)
Leg stuck (sitting on my foot & couldn't move)
Hand (ie somebody give me one to squeeze)
Need....to.....move
I don't know what I bloody want (transition)
How am I ever gonna do this again (transition)
It hurts (whimper, sob) (transition)
I can't do this any more (transition)
You said that ages ago you lying cow (in transition, to midwife telling me I was very close now)
It stings (2nd stage)

And then I see my precious baby and feel invincible.