/* ex3_2
    suuxxu */

#include <stdio.h>

int main(void){
    int n; // pencil's number
    
    // get inputs
    scanf("%d", &n);

    // output
    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;
}

