func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       if (n % 4 != 0) {         cout <<  NO n ;         continue;       }       cout <<  YES n ;       for (int i = 2; i <= n; i += 2) cout << i <<    ;       for (int i = 1; i < n - 1; i += 2) cout << i <<    ;       cout << (n - 1) + (n / 2) << endl;     }   }   