<P> Reality TV shows </P> <Ul> <Li> 2013: Exo's Showtime </Li> <Li> 2014: XOXO Exo </Li> <Li> 2014: Exo 90: 2014 </Li> <Li> 2015: SurpLines Exo (Line TV) (Xiumin, Chanyeol, Tao, Kai and Sehun) </Li> <Li> 2015: Exo Channel </Li> <Li> 2016: Exomentary Live </Li> <Li> 2017: Exo Tourgram </Li> <Li> 2018: Exo's World Trip on a Ladder' </Li> </Ul> <Li> 2013: Exo's Showtime </Li> <Li> 2014: XOXO Exo </Li>

Why did luhan kris and tao leave exo