#include <stdio.h>
int main(){

    int n;
    scanf("%d", &n);
    while(1=1){
    n = n%10;
    if(n <10 && 0 < n)
        break;
}
    if (n = 2 || n =4 || n = 5|| n = 7|| n = 9){
        printf("hon");
}
    if (n = 0 || n = 1 || n = 6|| n = 8){
        printf("pon");
}
    if (n = 3){
        printf("bon");
}
    return 0;
}