#include <iostream>
#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int v[19],n,m;
void write()
{
    for(int i=1;i<=m;i++)
        g<<v[i]<<" ";
        g<<"\n";
}
void GenCombinari(int k)
{
    if(k-1==m)
        write();
    else
    for(int i=v[k-1]+1;i<=n-m+k;i++)

    {
        v[k]=i;
        GenCombinari(k+1);
    }
}


int main()
{f>>n>>m;
GenCombinari(1);

}