Swiss System :
Round 1: Pre-determined matches
Round 2: Division into 2 groups
Group 1: Round 1 Winners - 4 teams
Group 2: Round 1 Losers - 4 teams
Each team faces a team from the same group they have not played yet
Round 3: Division into 3 groups
Group 1: Teams with a 2-0 score - 2 teams
Group 2: Teams with a 1-1 score - 4 teams
Group 3: Teams with a 0-2 score - 2 teams
Each team faces a team from the same group they have not played yet
Winner of Group 1 is qualified for the playoffs (Cumulated score: 3-0) - 1 team
Loser of Group 3 is eliminated (Cumulated score: 0-3) - 1 team
Round 4
Group 1: Teams with a 2-1 score - 2 teams
Group 2: Teams with a 1-2 score - 2 teams
Group 3: Due to odd number of matchups (3), one team with a 2-1 record will play another with a 1-2 record
Winner of Group 1 is qualified for the playoffs (Cumulated score: 3-1) - 1 team
Loser of Group 2 is eliminated (Cumulated score: 1-3) - 1 team
If loser of Group 3 is team with 1-2 score, they are eliminated
Round 5
Group 1: Teams with a 2-2 score - 2 teams
Second game will be played if required (i.e nobody is eliminated from Group 3)