import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        try (Scanner s = new Scanner(System.in)) {
            String n = s.next();
            System.out.println(unit(n));
        }
    }
    private static String unit(String n) {
        switch (n.charAt(n.length() - 1)) {
            case '3':
                return "bon";
            case '0':
            case '1':
            case '6':
            case '8':
                return "pon";
            default:
                return "hon";
        }
    }
}
/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