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