#include <stdio.h>
#include <stdlib.h>

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