Question: When is each episode of South Park typically written and produced?
About the article "South Park", section "Abstract".

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"South Park" is an American animated television series created by Trey Parker and Matt Stone for Comedy Central.
The series originated from a pair of animated shorts titled "The Spirit of Christmas", and the first episode of "South Park" originally aired on August 13, 1997 on Comedy Central.
A total of episodes have aired so far during the series' run.
Comedy Central renewed "South Park" through 2016, bringing the show to 20 seasons.
Intended for mature audiences, the show has become famous for its crude language and dark, surreal humorthat lampoons a wide range of topics.
The story revolves around four boys—Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick—and their bizarre adventures in and around the titular Colorado town.
The show remains Comedy Central's highest rated and is the network's second-longest-running program, behind "The Daily Show".
Each episode except the very first one, which was produced by cutout animation, is created with software that emulates the paper-cutout technique.
Parker and Stone continue to perform most of the voice acting, and Parker is the primary writer and director.
Except for the earliest seasons, each episode is typically written and produced during the week preceding its broadcast.
Each episode is assigned a production code number.
However, episodes sometimes air out of order, due to extra production-time requirements, scheduling considerations, or other reasons.
The later seasons of the show regularly consist of 14 episodes, with a run of seven episodes airing in spring and another seven episodes in autumn.
In 2013, Parker and Stone decided to cut the number of episodes per season from 14 to 10, beginning with the seventeenth season.
Besides the main series itself, originally-produced "South Park" segments have appeared in other works, such as sketches for talk shows and award ceremonies.
In 1999, "", a full-length musical film, debuted in theaters.
The eleventh season three-part "Imaginationland" story arc was also released as a combined direct-to-video film in 2008.
"South Park" seasons are regularly released on DVD, and starting with the twelfth season, on Blu-ray Disc.
Every episode has been made available for full-length streaming on the series' official website, South Park Studios, with the exception of three episodes: "Super Best Friends", "200", and "201", which were pulled from reruns and are only available exclusively on DVD.
Streaming is not available in all countries.
New episodes are added to the site the day following their debut, and an uncensored version is posted the following day.
The episode stays up for the remainder of the week, then taken down, and added to the site permanently three weeks later. 
South Park is an American adult animated sitcom created by Trey Parker and Matt Stone for the Comedy Central television network.
Intended for mature audiences, the show has become famous for its crude language and dark, surreal humor that satirizes a wide range of topics.
The ongoing narrative revolves around four boys—Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick—and their bizarre adventures in and around the titular Colorado town.
Parker and Stone developed the show from two animated shorts they created in 1992 and 1995.
The latter became one of the first Internet viral videos, which ultimately led to its production as a series.
"South Park" debuted in August 1997 with great success, consistently earning the highest ratings of any basic cable program.
Subsequent ratings have varied but it remains one of Comedy Central's highest rated shows, and is slated to air through at least 2016.
The pilot episode was produced using cutout animation.
All subsequent episodes are created with software that emulates the cutout technique.
Parker and Stone perform most of the voice acting.
Since 2000, each episode is typically written and produced during the week preceding its broadcast, with Parker serving as the primary writer and director.
There have been a total of episodes over the course of the show's 17 seasons.
The series has received numerous accolades, including five Primetime Emmy Awards, a Peabody Award, and numerous inclusions in various publications' lists of greatest television shows.
The show's popularity resulted in a feature-length theatrical film, "" which was released in June 1999, less than two years after the show's premiere, and became a commercial and critical success.
In 2013, "TV Guide" ranked "South Park" the tenth Greatest TV Cartoon of All Time.
"Tweek vs. Craig" is the fifth episode of the third season of the American animated television series "South Park", and the 36th episode of the series overall.
It originally aired on Comedy Central's in the United States on June 23, 1999.
In the episode Stan, Kyle and Cartman pit Tweek and Craig against each other.
Meanwhile, the boys' wood shop teacher, Mr. Adler, struggles to cope with the loss of his wife, who died in a plane crash.
The episode was written and directed by series co-creator Trey Parker and is rated TV-MA in the United States.
It was the last "South Park" episode to air before the film, "", was released one week later on June 30.  
"16 and Pregnant" is an American reality television series that debuted June 11, 2009, on MTV.
It follows the stories of pregnant teenage girls in high school dealing with the hardships of teenage pregnancy.
Each episode features a different teenage girl, with the episode typically beginning when she is  – 8 months into her pregnancy.
The episode typically ends when the baby is a few months old.
The series is produced in a documentary format, with an animation on notebook paper showing highlights during each episode preceding the commercial breaks.
"16 and Pregnant" has spawned three spin-off series: "Teen Mom", "Teen Mom 2" and "Teen Mom 3".
Each series follows the lives of four girls from their respective season of "16 and Pregnant" as they navigate their first years of motherhood. 
16 and Pregnant is an American reality television series that debuted June 11, 2009, on MTV.
It follows the stories of pregnant teenage girls in high school dealing with the hardships of teenage pregnancy.
Each episode features a different teenage girl, with the episode typically beginning when she is  – 8 months into her pregnancy.
The episode typically ends when the baby is a few months old.
The series is produced in a documentary format, with an animation on notebook paper showing highlights during each episode preceding the commercial breaks.
"16 and Pregnant" has spawned three spin-off series: "Teen Mom", "Teen Mom 2" and "Teen Mom 3".
Each series follows the lives of four girls from their respective season of "16 and Pregnant" as they navigate their first years of motherhood.
The fifth season will premiere on April 29, 2014.