import java.util.Scanner;

public class Main{

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		Integer n = Integer.parseInt(sc.next());
		String nn =String.valueOf(n);
		String aaa = nn.substring(nn.length()-1);
		 n = Integer.parseInt(aaa);
		
		if(n==2||n==4||n==5||n==7||n==9) 
		{System.out.println("hon");
			
		}else if (n==0||n==1||n==6||n==8) {
			System.out.println("pon");
		}else {
			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