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