#include <fstream>

using namespace std;

int n, k, v[19];

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

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

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