#include <bits/stdc++.h>
using namespace std;
int main() {
int t;
cin >> t;
while(t--)
{
string s = "codeforces";
int d=0;
char ch;
cin >> ch;
for(int i=0;i<s.size();i++ )
{
if(s[i]==ch)
d++;
}
if(d>0)
{
cout << "YES" << endl;
}
}
return 0;
}
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