import java.util.Scanner;

class A {
    public static void main(String[] args) {
        int n;
        Scanner sc = new Scanner(System.in);
        n = sc.nextInt();
        switch (n % 10)
        {
            case (2):
            case (4):
            case(5):
            case (7):
            case (9):
            System.out.println("hon");
            break;

            case (0):
            case (1):
            case (6):
            case (8):
                System.out.println("pon");
                break;
            case (3):
                System.out.println("bon");

        }

    }
}
