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#include <bits/stdc++.h>
using namespace std;
int n, k;
vector<int>comb;
void generare (int t)
{
if(t == n)
{
comb.push_back(t);
if (comb.size() == k)
{
for(int i = 0; i < comb.size(); i++) cout << comb[i] << ' ';
cout << '\n';
}
comb.pop_back();
if (comb.size() == k)
{
for(int i = 0; i < comb.size(); i++) cout << comb[i] << ' ';
cout << '\n';
}
}
else
{
comb.push_back(t);
generare(t + 1);
comb.pop_back();
generare(t + 1);
}
}
int main()
{
freopen("combinari.in", "r", stdin);
freopen("combinari.out", "w", stdout);
cin >> n >> k;
generare(1);
}