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B.cpp
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B.cpp
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#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define loop(i,a,b) for(ll i=a;i<b;i++)
#define testcases ll t;cin>>t;while(t--)
#define pb push_back
#define all(x) x.begin(), x.end()
#define dec(x) greater<x>()
int main()
{
#ifndef ONLINE_JUDGE
freopen("C:/Users/91731/Documents/input.txt","r",stdin);
freopen("C:/Users/91731/Documents/output.txt","w",stdout);
freopen("C:/Users/91731/Documents/error.txt","w",stderr);
#endif
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
testcases
{
ll n;cin>>n;
if(n%4==0)
{
cout<<"YES"<<endl;
ll even=2;
loop(i,0,n/2)
{
cout<<even<<" ";
even+=2;
}
even=1;
loop(i,0,n/4)
{
cout<<even<<" ";
even+=2;
}
even=2;
even+=2*(n/4)+1;
loop(i,0,n/4)
{
cout<<even<<" ";
even+=2;
}
cout<<endl;
}
else cout<<"NO"<<endl;
}
}