/*
generare toate combinarile combinari infoarena 
*/
#include<vector>
#include<string>
#include<string.h>
#include<algorithm>
#include<cstdio>
#include<fstream>
#include<iostream>
#include<ctime>
#include<set>
#include<map>
#include<cmath>

using namespace std;

#define LL long long
#define PII pair<int ,int>
#define PCI pair<char ,int>
#define VB vector <bool>
#define VI vector <int>
#define VC vector <char>
#define WI vector<VI>
#define WC vector<VC>
#define RS resize
#define X first
#define Y second

#define FORN(i,n) for(int i=0;i<n;++i)
#define FOR(i,a,b) for(int i=a;i<=b;++i)
#define FORD(i,a,b) for(int i=a;i>=b;--i)
#define REPEAT do
#define UNTIL(x) while((x))

#define IN_FILE "combinari.in"
#define OUT_FILE "combinari.out"
ifstream f(IN_FILE);
ofstream g(OUT_FILE);

//variables
int n, k;
float start;
//other functions
void generate(VI elem,int lenght)
{
	if (lenght == 0)
	{
		string a;
		FOR(i,1, k)
		{
			a = a + " " + to_string(elem[i]);
		}
		g << a.substr(1) <<"\n";
		return;
	}
	FOR(i, elem.back()+1, n)
	{
		VI elem2 = elem;
		elem2.push_back(i);
		generate(elem2, lenght - 1);
	}
}
void reading()
{
	f >> n >> k;
	f.close();
}
void solving()
{
	VI aux;
	aux.push_back(0);
	generate(aux,k);
}
void write_data()
{
}
int main()
{
	reading();
	solving();
	write_data();
}