// AUTHOR:: MOHAMAMD FAISAL

"use strict";

const main = (input) =>{
  
  const arr = input.trim().split("");
  const firstplace = arr[arr.length -1];
  
  if(firstplace == 3){
    console.log("bon");
  }
  else if(firstplace == 0 || firstplace == 1  || firstplace == 6 || firstplace == 8){
    console.log("pon");
  }
  else{
    console.log("hon");
  }
};
  
main(require("fs").readFileSync("/dev/stdin","utf8"));
