#include <stdio.h>
int main(void) {
	int N;
	scanf("%d", &N);
	N = N % 10;
	if (N == 3) {
		printf("bon");
	}
	else if (N == 0 || N == 1 || N == 6 || N == 8) {
		printf("pon");
	}
	else {
		printf("hon");
	}
	return 0;
}