#include <bits/stdc++.h>
#define cin ci
#define cout co
using namespace std;
ifstream cin("combinari.in");
ofstream cout("combinari.out");
int n, K;
vector<int> comb, fr;
void bkt(int k)
{
    if(k == K + 1)
    {
        for(int i = 1; i <= K; cout << comb[i] << " ", i ++);
        cout << '\n';
    }
    for(int i = comb[k - 1] + 1; i <= n; i ++)
    {
        comb[k] = i;

        bkt(k + 1);
    }
}
int main()
{
    cin >> n >> K;
    comb.resize(n + 5);
    fr.assign(n + 5, 0);
    bkt(1);
    return 0;
}