#include <stdio.h>

int main(void){
        int n;

        scanf("%d",&n);

        switch ( n % 10){
                case 0:
                case 1:
                case 6:
                case 8:
                        printf("pon");
                        break;
                case 3:
                        printf("bon");
                        break;

                default :
                        printf("hon");
                        break;
        }
        return 0;

}
