#include<stdio.h>

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