Draw lots and divide into ABC three groups with three teams in each group.
Group cycle, three games in each group, nine group matches on the first day.
The top three in the group directly advanced to the semi-finals.
The next morning, there were three round robin matches. On the first day of the group match, each team of the three teams was second, and the last one was decided to advance to the semi-finals.
Semi-final the next afternoon, A 1-B 1? C1-first place the next morning.
Three or four finalists lost in the semi-final-semi-final loss
Final semi-final victory-semi-final victory
A * * * played for 2 days, and the specific foul stopped. It's up to you to decide whether to divide it into four quarters, the first half or the second half.
I hope I can help you. You can keep asking questions. Hope to adopt.