Combinations of 20 numbers, 7 deletions/12 bets

 Description of combinations refers to Multi Multi. The combinations may be used in other draw-based games.

Out of 80 numbers we choose 20 at random and divide it into 12 bets with 7 crossings each                         

if you hit 3 numbers, the worst possible combination is two twos

3 4 9 11 12 16 17
6 7 9 10 12 14 17
5 6 10 13 14 15 18
2 6 8 10 14 15 19
2 4 11 13 15 16 19
1 4 5 11 15 16 20
1 4 7 9 12 16 20
1 3 7 9 11 17 20
3 7 8 9 12 14 18
3 6 8 9 10 17 18
2 5 8 10 13 18 19
1 2 5 11 13 19 20

Replace numbers from 1 to 20 with the numbers of your choice