#include<cstdio>

const int N=1<<20;

int n,k,s[N];

void back(int l)
{
	if (l==k)
	{
		for (int i=1;i<=k;i++)
			printf("%d ",s[i]);
		printf("\n");
	}
	else
	{
		for (int 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;
}