12 how to play the final of the basketball team?

First, 1, 2, 3, 4, 5 and 6 teams are divided into a group, which is called group A.

Teams 7, 8, 9, 10,1team,1team, and 12 are divided into one group, which is group B.

Then the two groups play round robin at the same time, and the two teams with the most wins enter the semi-finals.

Then team A 1 and team B 1 play, team A and team B play, and then exchange (for example, team AB is both 1, and team 2 is promoted).