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

ifstream fin("combinari.in");
ofstream fout("combinari.out");

int n, m, st[20];

void Afis(int top)
{
	int i;
	for (i = 1; i < top; i++)
		fout << st[i] << " ";
	fout << "\n";
}

void Back(int top)
{
	if (top == m + 1)
		Afis(top);
	else
		for (int i = st[top - 1] + 1; i <= n; i++)
		{
			st[top] = i;
			Back(top + 1);
		}
}

int main()
{
	fin >> n >> m;
	Back(1);

	return 0;
}