#include <stdio.h>
#define NMAX 19
int n,k,st[NMAX];
bool viz[NMAX];
void show()
{
	int i;
	for (i=1; i<=k; i++)
		printf("%d ",st[i]);
	printf("\n");
}
void back(int t)
{
	if (t==k+1)
	{
		show();
		return ;
	}
	int i;
	for (i=st[t-1]+1; i<=n; i++)
		if (!viz[i])
		{
			st[t]=i; viz[i]=1;
			back(t+1);
			viz[i]=0;
		}
}
int main()
{
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);
	scanf("%d%d",&n,&k);
	back(1);
	return 0;
}