#include <bits/stdc++.h>

using namespace std;

int st[20], n, k;

ofstream fout("combinari.out");

void Afisare()
{
    for(int i = 1; i <= k; i++)
        fout << st[i] << " ";
    fout << "\n";
}

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

int main()
{
    ifstream fin("combinari.in");
    fin >> n >> k;
    fin.close();

    Back(1);
    fout.close();
    return 0;
}