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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n, k;
vector<int> sol;
void bt(int start) {
if (sol.size() == k) {
for (int x : sol) {
fout << x << " ";
}
fout << '\n';
return;
}
for (int i = start; i <= n; i++) {
sol.push_back(i);
bt(i + 1);
sol.pop_back();
}
}
int main() {
fin >> n >> k;
bt(1);
return 0;
}