/******************************************************************************
Online C++ Compiler.
Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.
*******************************************************************************/
#include <iostream>
using namespace std;
int N, K, H;
void
repeat_symbol (int n, char c)
{
for (int i = 0; i < n; ++i)
std::cout << c;
}
int
main ()
{
std::cin >> N >> K >> H;
for (int i = 1; i <= H; ++i)
{
for (int j = 1; j <= K; ++j)
{
repeat_symbol (H - i, ' ');
repeat_symbol (i, i > 9 ? 'A' + i - 10 : '0' + i);
}
std::cout << std::endl;
}
return 0;
}