#include <fstream>

using namespace std;

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

int n, s[20], k;

void Back(int l)
{
    if (l == k)
    {
        for (int i = 1; i <= k; ++ i)
            G << s[i] << " ";
        G << '\n';
    }
    else
        for (int i = s[l] + 1; i <= n; ++ i)
        {
            s[l + 1] = i;
            Back(l + 1);
        }
}

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