#include<fstream>
#include<vector>
using namespace std;
ifstream cin("combinari.in");
ofstream cout("combinari.out");
int k,n;
vector<int> a;
void A(int l)
{
    if((int)a.size()==k) {
        for(int i=0;i<k;cout<<a[i++]<<' ');
        cout<<'\n';
    } else
        for(int i=l;i<=n;a.push_back(i),A(i+1),a.pop_back(),++i);
}
int main()
{
    return cin>>n>>k,A(1),0;
}