#include<iostream>
#include<algorithm>
#include<string>
#include <vector>
using namespace std;
int main() {
    string s;
    int o=0,k=0;
    char x[6] = {  't', 'y', 'i', 'l', 'p' , 'c' };
    cin >> s;
    for (size_t i = 0; i < s.length(); i++) {
        s[i] = tolower(s[i]);

    }
    /for (size_t i = 0; i < 2; i++){
        o = s.find('a');
        if (o == -1) {
            cout << "No";
            return 0;
        }
    }/
    for (size_t i = 0; i < s.length(); i++) {
            s[i] = tolower(s[i]);
            if (s[i] == 'a')
            {
                k++;
            }
    }
    if (k<2){
        cout << "No";
        return 0;
    }
    for (size_t i = 0; i < 6; i++) {
        k=s.find(x[i]);
        if (k == -1) {
            cout << "No";
            return 0;
        }
    }
    cout << "Yes";
}