College physical education: there are 19 people participating in the landlord fighting competition, and 3 tables can be played by 9 people at the same time. How to arrange it?

In the first round, the lottery was decided, and three groups formed six groups. Say goodbye alone. Six winners draw lots in groups of three to form two groups, one for each person. In the end, three people were left, and finally won the championship, the second place and the third place.

Note: Each group of games is divided into three games. Lose a game without losing points; Win a game and get a point; If you win a game, the landlord will get two points. The highest score goes to the next round. The finals are ranked according to points. If the scores in the game are equal, another game will be played. The winner continues or wins the championship and wins the third place. And the three families take turns to be local hosts.