#include <stdio.h>
using namespace std;
//ifstream f ("permutari.in");
//ofstream g ("permutari.out");
unsigned short int n, s[50],c;
void back(int k)
{
	int i;
	if (k==c+1)
	{
	for (i=1; i<=c; ++i)
	{
		printf ("%d ", s [i]);
	}
	printf("\n");
	}
	for (i=s[k-1]+1; i<=n; ++i)
	{
		s[k]=i;
		back (k+1);
	}
}
int main()
{
	freopen ("combinari.in", "r", stdin);
	freopen ("combinari.out", "w", stdout);
	scanf ("%d", &n);
	scanf ("%d", &c);
	back(1);
	return 0;
}