#include <iostream>
#include <fstream>
using namespace std;

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

int N, M, sol[20];

void afis(){
    int i;
    for(i = 1; i <= M; i++){
        out << sol[i] << " ";
    }
    out << "\n";
}

void backt(int k){
    if(k == M + 1){
        afis();
    }else{
        for(int i = sol[k - 1] + 1; i <= N; i++){
            sol[k] = i;
            backt(k + 1);
        }
    }
}

int main()
{
    in >> N >> M;
    backt(1);
    return 0;
}