Ask the master of mathematics to make the schedule of the basketball game.

Team 9 draws lots, 1-9.

The timetable is as follows:

first inning

1-2 4-9 5-8 6-7 3 Goodbye.

Second round

1-3 2-4 6-9 7-8 5 Goodbye.

Third round

1-4 2-6 3-5 8-9 7 Goodbye.

The fourth round

1-5 2-8 3-7 4-6 9 Goodbye.

Fifth round

1-6 3-9 4-8 5-7 2 Goodbye.

Sixth round

1-7 2-3 5-9 6-8 4 Goodbye.

Seventh round

1-8 2-5 3-4 7-9 6 Goodbye.

Eighth round

1-9 2-7 3-6 4-5 8 Goodbye.

The ninth round

2-9 3-8 4-7 5-6 1 Goodbye