#include <iostream>
#include <fstream>

using namespace std;

ifstream in("combinari.in");
ofstream out("combinari.out");

int n,k,st[19];

void Afisare()
{
    int i;
    for (i=1; i<=k; i++)
        if (st[i] != 0)
         out << st[i] << " ";
    out << "\n";
}
void Back(int top)
{
    int i;
    if (top == k+1)
        Afisare();
    else
        for (i=st[top-1]+1; i<=n-k+top; i++)
    {
        st[top] = i;
        Back(top+1);
    }
}

int main()
{
    in >> n >> k;
    Back(1);
    return 0;
}