∘ 18 ∘

1 ∘ 1 ∘ 

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3 ∘ 3 ∘ 

4 ∘ 4 ∘ 

5 ∘ 5 ∘ 

6 ∘ 6 ∘ 

7 ∘ 7 ∘ 

8 ∘ 8 ∘ 

9 ∘ 9 ∘ 

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11 ∘ 11 ∘ 

12 ∘ 12 ∘ 

13 ∘ 13 ∘ 

14 ∘ 14 ∘ 

15 ∘ 15 ∘ 

16 ∘ 16 ∘ 

17 ∘ 17 ∘ 

18 ∘ 18 ∘ 

19 ∘ 19 ∘ 