#include <fstream>

using namespace std;

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

int x[20], n, m;

void back(int k) {
    if (k > m) {
        for (int i=1;i<=m;i++)
            fout<<x[i]<<" ";
        fout<<"\n";
        return;
    }

    for (int i=x[k-1]+1;i<=n;i++) {
        x[k] = i;
        back(k+1);
    }

}

int main () {
    fin>>n>>m;
    back(1);

    return 0;
}