#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
#define MAX 20
int sol[MAX], n, k;
void back(int i)
{
    if(i==k+1){
        for(int j=1; j<=k; j++)
            fout<<sol[j]<<' ';
        fout<<'\n';
    }
    else
        for(int j=sol[i-1]+1; j<=n; j++){
            sol[i] = j;
            back(i+1);
        }
}
int main()
{
    fin>>n>>k;
    back(1);
    return 0;
}