#include <fstream>
#define MAX 19
using namespace std;

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

int n, k, v[MAX];

void Write(int x)
{
    for(int i = 1; i <= x; ++i)
        out_f << v[i] << " ";
    out_f << "\n";
}

bool Sol(int x)
{
    return x == k ? 1 : 0;
}

void BK(int x)
{
    int i;
    for(i = v[x - 1] + 1; i <= n; ++i){
        v[x] = i;
        if(Sol(x))
            Write(x);
        else BK(x + 1);
    }
}

int main()
{
    in_f >> n >> k;
    BK(1);

    in_f.close();
    out_f.close();
    return 0;
}