import java.lang.reflect.Array;
import java.util.*;
import java.io.*;
import java.lang.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        String inp = sc.next();

        int a = Integer.parseInt(String.valueOf(inp.charAt(inp.length() - 1)));

        if (a== 2|| a== 4|| a== 5|| a== 7|| a== 9)
            System.out.println("hon");
        else if (a== 0|| a== 1|| a== 6|| a== 8)
            System.out.println("pon");
        else if (a== 3)
            System.out.println("bon");
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz