#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
using namespace std;
int main(){
    string s;cin >> s;
    vector<char> qs(14);
    for(int i=0;i<14;i++) qs[i]=s[i];
    vector<char> ans(14);
    ans={'k','y','o','p','r','o','t','e','n','k','e','i','9','0'};
    sort(qs.begin(),qs.end());
    sort(ans.begin(),ans.end());
    for(int i=0;i<14;i++) {
        if(qs[i]!=ans[i]){
            cout << "No" << endl;
            return 0;
        }
    }
    cout << "Yes" << endl;
    return 0;
}