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