#include <bits/stdc++.h>

int main(){
    int n;
    cin >> n;

    switch(n % 10){
        case 2: case 4:  case 5: case 7: case 9:
            cout << "hon";
            break;
        case 3:
            cout << "pon";
            break;
        default: cout << "bon";
        
    }
    return 0; 
}