#include <bits/stdc++.h>   using namespace std;   int main(void) {     int t, n;     cin >> t;     string s;     for (int k = 0; k < t; k++) {       cin >> n;       cin >> s;       if (s.size() == 2) {         if (s[0] < s[1]) {           cout <<  YES                 <<   n ;           cout << 2 <<   n ;           cout << s[0] <<     << s[1] << endl;         } else           cout <<  NO                 <<   n ;       } else {         cout <<  YES               <<   n ;         cout << 2 <<   n ;         cout << s[0] <<    ;         for (int i = 1; i < s.size(); i++) cout << s[i];         cout << endl;       }     }   }   