#include <stdio.h>

int main(void){
  int N;
  scanf("%d", &N);
  
  switch(N%10){
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      printf("hon\n");
      break;
      
    case 0:
    case 1:
    case 6:
    case 8:
        printf("pon\n");
		break;
    case 3:
        printf("bon\n");
		break;
  }
  return 0;
}
