#include<stdio.h>

int main(){
  
  int a,b;
  
  scanf("%d",&a);
  
  b = a % 10;
  //printf("a=%d b=%d\n",a,b);
  
  if(b == 2 || b == 4 || b == 5 || b == 7 || b ==9){
    printf("hon\n");
  }else if(b == 0 || b == 1 || b == 6 || b == 8){
    printf("pon\n");
  }else if(b == 3){
    printf("bon\n");
  }
    
  return 0;
        
}