13 how to arrange the badminton match for 3 people in each group?

Can be divided into four groups: 9 people, 9 people, 9 people, 12 people. First of all, the group round robin, the players in the group 1 enter the knockout stage, and the first place in each group enters the playoffs. Prepare four decks of poker with different colors and divide them into four ABCD groups. Each group is divided into four groups according to the black plum square, and the on-site lottery is the fairest and easiest to operate.