#include<stdio.h>

int main(){

int n,m;

scanf("%d",&n);

m = n % 10;

if(m == 3){
  printf("bon\n");
}else if(m == 0 || m == 1 || m == 6 || m == 8){
  printf("pon\n");
}else{
  printf("hon\n");
}

return 0;

}
