#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;
}
