What does kpl group match mean?

The kpl group competition is divided into three groups: S, A and B***. The group competition is divided into three rounds. After each round, teams will be changed between groups. After the third round, six teams in Group S and the top four teams in Group A entered the playoffs.

Among them, after the first round of group matches, the top two in Group A entered Group S, and the last two in Group S fell into Group A. The top two in Group B entered Group A, and the last two in Group A fell into Group A. ..

After the second round of the group stage, change teams through card games. All the teams that fell into Group B in this round were eliminated and missed the third round.

In the third round, only Group S and Group A played group matches, and finally the whole group of Group S and the top four of Group A entered the playoffs.