#include <stdio.h>
#include<string.h>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)


int main(){
 int N;
  scanf("%d", &N);

  int ans = N % 10;
  switch(ans){
    case 0:
      printf("pon\n");
      break;
    case 1:
      printf("pon\n");
      break;
    case 2:
      printf("hon\n");
      break;
    case 3:
      printf("bon\n");
      break;
    case 4:
      printf("hon\n");
      break;
    case 5:
      printf("hon\n");
      break;
    case 6:
      printf("pon\n");
      break;
    case 7:
      printf("hon\n");
      break;
    case 8:
      printf("pon\n");
      break;
    case 9:
      printf("hon\n");
      break;
  }
 
return 0;
}
