#include <stdio.h>

int main(void) {
  int a,b;
  scanf("%d",&a);
  b = a%10;
  if (b == 3) {
    printf("bon");
  } else if(b == 0 || b == 1 || b == 6 || b == 8) {
    printf("pon");
  } else {
    printf("hon");
  }
  return 0;
}