What is the Egyptian Hieroglyph for Life?

I've gone to a few places, and I've seen it to be lion, reed, viper, vulture but the vulture is the letter a. Anyone know a place or site that will give me the correct hieroglyph? I want to get it on my wrist as a tattoo with an Ankh but I want to make sure that its correct and not oh you got something wrong and im stuck with it forever. All help appreciated.