It turned out to be: Group A: 1 team, team 2.
Group B: Group III and Group IV
Group C: Team 5 and Team 6
Now: Group A: 1 team, team 3, team 5.
Group B: Team 2, Team 4 and Team 6.
Group matches plus finals, one ***7 games.
It's unfair to play all the knockout rounds, because the winner has to compete in a row and his physical strength can't keep up. If you have to eliminate competitors, you can only lengthen the front.
I hope this helps.