Table tennis team competition ~5 people in a group ~ 4 teams ~ What is the schedule of the round robin? How are the champions, runners-up and runners-up divided?

A-B

C-D

A day later,

A-C

B-D

every two days

A-D

B-C

At this point, the cycle ends.

Win a game with 3 points.

The champion won the most, followed by the runner-up and runner-up. If there is the same score, an extra match will be held.