#include <bits/stdc++.h>
#define link pair<int, int>
#define x first
#define y second

using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n, m;
int comb[20];

void back(int k)
{
  if(k == m + 1)
  {
    for(int i = 1;i <= m;++i)
      g<<comb[i]<<" ";
    g<<'\n';
    return;
  }
  for(int i = comb[k - 1] + 1;i <= n;++i)
    {
      comb[k] = i;
      back(k + 1);
    }
}


int main()
{
  f>>n>>m;
  back(1);
  return 0;
}