# -*- coding: utf-8 -*-


def main():
    import sys
    input = sys.stdin.readline

    n = input()
    digit = int(n[-1])

    if digit == 3:
        print('bon')
    elif digit == 0:
        print('pon')
    elif digit == 1:
        print('pon')
    elif digit == 6:
        print('pon')
    elif digit == 8:
        print('pon')
    else:
        print('hon')


if __name__ == '__main__':
    main()
