#include<stdio.h>
int main(void){
  int n;
    scanf("%d",&n);
    if(n%10==3){
      printf("bon\n");
    }else if(n%10==0||n%10==1||n%10==6||n%10==8){
      printf("pon\n");
    }else{
      printf("hon\n");
    }
    return 0;
}
