The code names of the seven teams will be determined by drawing lots as A, B, C, D, E, E and G. The competition will be divided into seven rounds, with three games in each round. Just follow the following arrangements (all teams can play for one day and have a rest).
The first, second and third group matches are over.
A-B company
Two F A-C B-E D-G
Sandong A-D B-C F-G
D A-E B-F C-G
Five C A-F B-G D-E
Six letters
Seven A B-D C-F E-G