1 2 3 4 5 6 ...20

1 2 3 4 5

1 2 3 4

1 2 3 4 5 6

1 2 3 4 5 6 ...11

1 2 3 4 5 6 ...7

1 2 3 4 5 6 ...7

1 2 3 4 5 6 ...8

1 2 3 4 5 6 ...27

1 2 3 4 5 6 ...17

1 2 3 4

1 2 3

1 2 3 4 5 6 ...9

1 2 3 4 5 6 ...20

1 2 3 4 5

1 2 3 4 5

1 2 3 4 5 6 ...16

1 2 3 4 5 6

1 2 3 4 5 6 ...27

1 2

1 2 3 4 5 6 ...18

1 2