How to arrange the competition system of freshman basketball game

10 teams are divided into AB groups by lot, with 5 people in each group. Play a single round robin in a group; Take the top two to advance to the next round of competition, and then carry out the knockout, group A 1 against group B 2, and group A 2 against group B1; After that, the finals will be held; * * * needs to play 24 games in total, just arrange four games a week, and the time you give is completely ok. You can even arrange the game after class at noon, or the game after class at night, or you can take the top four in the group stage to advance to the competition.