#ifdef EZ
   #include "./ez/ez.h"
#else
   #include <bits/stdc++.h>
#endif
#define mp make_pair
#define mt make_tuple
#define ll long long
#define pb emplace_back
#define fi first
#define se second
using namespace std;



int main()
{
   cin.tie(0)->sync_with_stdio(0);
   
   int t;
   cin >> t;
   while (t--)
   {
      char c;
      cin >> c;

      if (strchr("codeforces", c))
         cout << "YES\n";
      else
         cout << "NO\n";
   }
}