#include <iostream>
#include <string>
using namespace std;

void spell(int n, string* const &a)
{
	if (n == 0)
		return;
	spell(n / 10, a);
	cout << a[n % 10];
}

int main()
{
	int n;
	string a[10]{"zero ", "one ", "two ", "three ", "four ", "five ", "six ", "seven ", "eight ", "nine "};
	do
	{
		if ((!(cin >> n)) || (n < 0))
			break;
		spell(n, a);
	}
	while (true);
	return 0;
}