#include <bits/stdc++.h> 
using namespace std;

int main(){
    int n;
    cin >> n;
    int d;
    while(n != 0){
        d = n%10;
        n/=10;
    }

    switch(d){
        case 2: case 4:  case 5: case 7: case 9:
            cout << "hon";
            break;
        case 0: case 1: case 6: case 8:
            cout << "pon";
            break;
        case 3:
            cout << "bon";
            break;
        default: 
    }
    return 0; 
}