#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("combinari.in");
ofstream fout("combinari.out");

int n, k;
int sir[20];

void gen(int cif, int lg)
{
    if(lg == k + 1){
        for(int j = 1; j <= k; j++)
            cout << sir[j] << " ";
        cout << "\n";
        return;
    }
    for(int i = sir[lg - 1] + 1; i <= n; i++){
        sir[lg] = i;
        gen(cif + 1, lg + 1);
    }
}

int main()
{
    fin >> n >> k;
    gen(1,1);
    return 0;
}