#include <stdio.h>
int n,k,v[19],k2;
void back (int k)
{
	int i;
	if (k==k2)
	{
		for (i=1; i<=k; i++)
			printf("%d ", v[i]);
		printf("\n");
	}
	else 
		for (i=v[k]+1; i<=n; i++)
		{
			v[k+1]=i;
			back(k+1);
		}
}
int main () 
{
	freopen("combinari.in", "r", stdin);
	freopen("combinari.out", "w", stdout);
	scanf("%d %d", &n,&k2);
	back(0);
	return 0;
}