import java.util.Scanner;

public class main {
  public static void main(String args[]){

    Scanner scan = new Scanner(System.in);
    int val = scan.nextInt();
    if(val>99){
    for(i=2;i>=;i--){
		x=val%10
		a[i]=x
		val=val/10
    }
          if(a[2]==2 ||a[2]==4 || a[2]==5 || a[2]==7 || a[2]==9){
			System.out.println("hon");
          }else if(a[2]==0 ||a[2]==1 || a[2]==6 ||a[2]==8){
			System.out.println("pon");
          }else{
            System.out.println("bon");
          }
    }else if(val>9){
       for(i=1;i>=;i--){
		x=val%10
		a[i]=x
		val=val/10
    }
          if(a[1]==2 ||a[1]==4 || a[1]==5 || a[1]==7 || a[1]==9){
			System.out.println("hon");
          }else if(a[1]==0 ||a[1]==1 || a[1]==6 ||a[1]==8){
			System.out.println("pon");
          }else{
            System.out.println("bon");
          }
    }else{
      if(val==2 ||val==4 || val==5 || val==7 || val==9){
			System.out.println("hon");
          }else if(val==0 ||val==1 || val==6 || val==8){
			System.out.println("pon");
          }else{
            System.out.println("bon");
          }
