#include <fstream>

using namespace std;

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

int n, k, v[ 20], f[20],i;

void back (int K) {

    if (K>k) {
        for (int i=1;i<=k;i++)
            fout<<v[i]<<" ";
        fout<<"\n";
        return ;
    }
    for (int i=v[K-1];i<=n;i++) {
        if (f[i]==0) {
            f[i]=1;
            v[K]=i;
            back(K+1);
            f[i]=0;
        }
    }
}

int main () {

    fin>>n>>k;
    v[0]=1;
    back(1);

    return 0;
}