#include <iostream>
#include <fstream>

using namespace std;

ifstream f ("combinari.in");
ofstream t ("combinari.out");

int n,k,v[20];

void combinare(int index,int last)
{
    if (index==k){for (int i=0;i<k;++i) t<<v[i]<<" ";
            t<<endl;}
    else for (int i=last+1; i<=n; ++i){
            v[index]=i;
            combinare(index+1,v[index]);}
}

int main()
{
    f>>n>>k;
    combinare(0,0);
    return 0;
}