#include <iostream>
#include <fstream>
#include <bitset>

using namespace std;

bitset<19> nr;
int n, k, v[19];

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

void bk(int x)
{
    if(x > k)
    {
        for(int i = 1; i <= k; ++i)
            g << v[i] << ' ';
        g << '\n';
    }
    else
        for(int i = v[x-1]+1; i <= n; ++i){
                nr[i] = 1;
                v[x] = i;
                bk(x+1);
                nr[i] = 0;
        }
}

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

    bk(1);
    return 0;
}