What are the charmed episodes when piper turns evil?

The Wendigo (Season One)-When she was turned into a Wendigo.

Coyote Piper (Season Three)-When she was possessed by that spirit.

Bride and Gloom (Season Three)-When the sisters are all enchanted so a priestess can steal the book of Shadows.

Hell Hath No Fury (Season Four)-When Piper becomes a Fury, after not being able to let go of her anger over Prue's death.

Centennial Charmed (Season five)-IN Cole's alternate reality PIper is evil, hunting demons to avenge Prue's death.

Oh My Goddess Part Two (Season Five)-Piper, still in Godess form terrorizes the city of San Fransisco with a storm. Although she isn't technically evil its mainly anger.

Valhalley Of The Dolls Parts One and Two (Season Six)-Piper, having been stripped of her emotions and memories becomes a Valkarie (Not technically evil, although she doesn't act like herself.

SWord And The City (Season Six)-Piper is possessed by Excalibur.

It's A Bad, Bad, Bad, Bad, World Parts One and Two (Season Six)-Although we never see Evil Piper we do hear her, although its alternate realisty evil Piper.

A Call To Arms (Season Seven)-When possessed by Hindu spirits Piper and Leo nearly destroy the Universe.

Once In A Blue Moon (Season Seven)-The girls become dogs because of the Blue Moon and attach their new whitelighter.

Hulkus Polkus (Season Eight)-When they are infected with the government made virus.