#include <bits/stdc++.h>
using namespace std;

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

int n, sol[25], m;

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

void bkt(int k){
    if(k == m)
        afis();
    for(int i = sol[k] + 1; i <= n; i++){
        sol[k + 1] = i;
        bkt(k + 1);
    }
}

int main(){
    in>>n>>m;
    bkt(0);
}