#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int x[20];
int combinari(int n,int k, int pos)
{
    if(pos>k)
    {
        for(int i=1;i<=k;i++)
            fout<<x[i]<<" ";
    fout<<'\n';
    }
    else for ( x[pos] = x[pos-1] + 1; x[pos] <= n - (k - pos); x[pos]++ )
                combinari(n,k,pos+1);
}
int main()
{
    int n,k;
fin>>n>>k;
x[0]=0;
combinari(n,k,1);
fin.close();
fout.close();

    return 0;
}