19 lines
355 B
Python
19 lines
355 B
Python
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def pair(n):
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if n%2 == 0:
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return "No"
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l = (3/2)*(n+1)
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res = []
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for i in range(1, (n+1)//2):
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res.append((i, l+i-1))
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for i in range(1, (n+1)//2+n%2):
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res.append((n-i+1, l-i))
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return "Yes\n"+"\n".join([f"{int(a[0])} {int(a[1])}" for a in res])
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for _ in range(int(input())):
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print(pair(int(input())))
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