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#include <bits/stdc++.h>
using namespace std;
typedef long long LL;

void sek(int n, string z)
{
	int a = n/9;
	int m = n%9;
	for (int i = 0; i < a; i++)
		cout << "9[" << z << "]";
	if (m > 1)
		cout << m << "[" << z << "]";
	else if (m == 1)
		cout << z;
}

void sek(int n, char z)
{
	int a = n/9;
	int m = n%9;
	for (int i = 0; i < a; i++)
		cout << "9" << z;
	if (m > 1)
		cout << m << z;
	else if (m == 1)
		cout << z;
}

int main()
{
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

	int n;
	cin >> n;
	sek(n, 'F');
	sek(n, 'B');
	while (n > 0)
	{
		sek(1, 'D');
		sek(n-1, 'E');
		sek(n-1, "AC");
		n--;
	}
}