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

ifstream f("combinari.in");
ofstream g("combinari.out");
int st[20], *p = st;

int dfs(const int n, const int k, const int cur = 1){
    if(p-st == k) copy(st, p, ostream_iterator<int>(g, " ")), g << '\n';
    else for(int i = cur; i <= n; ++i)
        *p++ = i, dfs(n, k, i+1), --p; }

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