#include<cstdio>
using namespace std;

int n,m,i,k,C[100];

void read(),back(int);

int main()
{
	read();
	back(1);
	return 0;
}

void read()
{
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);
	scanf("%d%d",&n,&m);
}

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