#include <bits/stdc++.h>
#define NMAX 20
using namespace std;
ifstream fin ("combinari.in");
ofstream fout ("combinari.out");

int n, m, sol[NMAX];

void gen (int k);

int main()
{
    fin>>n>>m; //combinari de n luate cate m
    sol[0] = 0;
    gen(1);
    return 0;
}

void gen (int k)
{
 int i;
 if(k - 1 == m)
   {for(i = 1; i <= m; i++)
       fout<<sol[i]<<' ';
    fout<<'\n';
   }
   else
   {for(i = sol[k - 1] + 1; i <= n; i++)
        {sol[k] = i;
         gen(k + 1);
        }
   }
}