Question: What number in the series was last episode of South Park to use dialogue by a woman initially credited as Shannen Cassidy?

Context articles: Chickenlover
Woodland Critter Christmas
Lisa the Drama Queen
Starvin' Marvin in Space
Gary Puckett &amp; The Union Gap
Hooked on Monkey Fonics
Mary Kay Bergman
All Hell Breaks Loose (Charmed)
Conjoined Fetus Lady
South Park Let's Go Tower Defense Play!

"Chickenlover" is the fourth episode in the second season of the American animated television series "South Park".
 The 16th episode of the series overall, it originally aired on Comedy Central in the United States on May 27, 1998.
 The episode was written by series co-creators Trey Parker and Matt Stone, along with David R. Goodman, and directed by Parker.
 In the episode, Officer Barbrady resigns as South Park's only police officer because of his illiteracy.
 Anarchy ensues, just as chickens are mysteriously being molested across South Park.
 Barbrady enlists the help of the boys to learn to read and discover who is molesting the chickens.
 Cartman, meanwhile, masquerades as a police officer.
"Woodland Critter Christmas" is episode 125 of the Comedy Central series "South Park".
 It originally aired on December 15, 2004.
 It was the last episode of the series to have a Christmas theme for ten years until 2014's "#HappyHolograms".
"Lisa the Drama Queen" is the ninth episode of the twentieth season of "The Simpsons".
 It originally aired on the Fox network in the United States on January 25, 2009 and guest starred Emily Blunt as Juliet.
 A special version of the end credits theme was performed by Fall Out Boy, although they do not guest star in the actual episode.
 This was the last episode in the series to be presented only in standard definition, the first regular episode to begin right after the opening credits without a commercial break, with an episode now having four segments, and the last episode to use the original opening sequence starting from Season 2.
 Brian Kelley returns as a writer after five seasons of being absent from the show.
 The episode is very loosely based on the 1994 film "Heavenly Creatures".
Starvin' Marvin in Space is episode 44 of the animated television series South Park.
 It originally aired on Comedy Central in the United States on November 17, 1999.
 Like the episode Mr. Hankey's Christmas Classics, the episode is dedicated to Mary Kay Bergman, who lent her voice to nearly all of South Park's female characters.
 This was the last show to use dialogue by Bergman, who committed suicide shortly after production was completed.
Gary Puckett & the Union Gap (initially credited as The Union Gap featuring Gary Puckett) was an American pop rock group active in the late 1960s.
 Their biggest hits were "Woman, Woman"; "Over You"; "Young Girl"; and "Lady Willpower."
 It was formed by Gary Puckett, Gary 'Mutha' Withem, Dwight Bement, Kerry Chater and Paul Wheatbread, who eventually named it the Union Gap.
 It featured costumes that were based on the Union Army uniforms worn during the American Civil War.
 They were noticed by Jerry Fuller, who gave them a recording contract with Columbia Records.
 The group eventually grew unhappy with doing material written and produced by others, leading them to stop working with Fuller.
 The band eventually disbanded and Puckett went on to do both solo work and collaborations.
"Hooked on Monkey Fonics" is episode 12 of season 3 and the 43rd overall episode of Comedy Central's animated series "South Park".
 It originally aired on November 10, 1999.
 It features issues of homeschooling and phonics, a method of teaching children to read.
 This is the final episode of South Park to feature the voice talents of Mary Kay Bergman, who committed suicide the day after the episode aired.
 The final episode to use her dialogue was "Starvin' Marvin in Space" which ended production shortly before her death.
Mary Kay Bergman (June 5, 1961 – November 11, 1999), initially credited on "South Park" as Shannen Cassidy, was an American voice actress and voice-over teacher.
"All Hell Breaks Loose" is the twenty-second episode and season finale of the third season of the American television series "Charmed"; it is also the 66th overall episode in the series.
 The episode was originally broadcast in the United States on May 17, 2001 on The WB.
 It was written by Brad Kern and directed by Shannen Doherty.
 As well as being Doherty's last episode as director, it was also her last appearance on the show as the character Prue Halliwell, although the character would later return in the .
 In the episode, The Charmed Ones deal with their secret of being witches going global and all of the news reporters swarming them.
"Conjoined Fetus Lady" is the fifth episode in the second season of the American animated television series "South Park".
 The 18th episode of the series overall, it originally aired on Comedy Central in the United States on June 3, 1998.
 The episode was written by series co-creators Trey Parker and Matt Stone, along with David R. Goodman, and directed by Parker.
 In the episode, South Park Elementary's dodgeball team travels to China to compete for the dodgeball championship, while the town of South Park pays tribute to the school nurse, who is living with conjoined twin myslexia.
South Park Let's Go Tower Defense Play!
 is a 2009 video game based on the American animated television series "South Park", released on the Xbox Live Arcade service for the Xbox 360 video game console.
 The game was developed by Doublesix in collaboration with South Park Digital Studios and Xbox Live Productions.
 "Let's Go Tower Defense Play" is a tower defense game, with the added element of being a fast-paced action game as well.
 Thus, players do not only build towers to eliminate destructive forces, but they also have to control multiple characters in order to successfully protect the town of South Park.
 "South Park Let's Go Tower Defense Play!"
 is the first "South Park" video game released after three early titles released between 1998 and 2000.