import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int a = sc.nextInt() % 10;
        String ans = "";
      
        if(a == 2 || a == 4 || a == 5 || a == 7 || a == 9){
          ans = "hon";
        }else if(a == 0 || a == 1 || a == 6 || a == 8){
          ans = "pon";
        }else if(a == 3){
          ans = "bon";
        }
        
      	System.out.println(ans);
 
    }
}
/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