#include<stdio.h>
int main() {
	int n;
	scanf("%d",&n);
	if (n % 10 == 9 || n % 10 == 7 || n % 10 == 5 || n % 10 == 4 || n % 10 == 2)
		printf("hon");
	if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
		printf("pon");
	if (n % 10 == 3)
		printf("bon");
}