#include<stdio.h>
int s[21],n,k;
void back(int l)
{
	int i;
	if (l==k) 
	{
		for (i=1;i<=k;i++)
			printf("%d ",s[i]);
		printf("\n");
	}
	else
	{
		for (i=s[l]+1;i<=n;i++) 
		{
			s[l+1]=i;
			back(l+1);
		}
	}
}
int main()
{
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);
	scanf("%d%d",&n,&k);
	back(0);
	return 0;
}