#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int comb[20], n, k;
void print()
{
    for (int i=1; i<=k; i++)
        g<<comb[i]<<" ";
    g<<"\n";
}
void back(int el)
{
    for (int i=comb[el-1]+1; i<=n; i++) {
        comb[el]=i;
        if (el==k)
            print();
        else
            back(el+1);
    }
}
int main()
{
    f>>n>>k;
    back(1);
    return 0;
}