#include <fstream>

int n;
int k;
int arr[18];
std::ifstream mama("combinari.in");
std::ofstream tata("combinari.out");

void
go(int index)
{
    if (index == k)
    {
        for (int i = 0; i < k; ++i)
        {
            tata << arr[i] << ' ';
        }

        tata << '\n';
        return;
    }

    for (int i = arr[index - 1] + 1; i <= n - k + index + 1; ++i)
    {
        arr[index] = i;
        go(index + 1);
    }
}

int main()
{
    mama >> n >> k;

    for (int i = 1; i <= n - k + 1; ++i)
    {
        arr[0] = i;
        go(1);
    }

    return 0;
}