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#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n, x[20], k;
void afisare() {
for(int i = 1; i <= k; i++) {
fout << x[i] << " ";
}
fout << "\n";
}
void back(int k1) {
for(int i = x[k1 - 1] + 1; i <= n - k + k1; i++) {
x[k1] = i;
if(k1 < k) {
back(k1 + 1);
} else {
afisare();
}
}
}
int main() {
fin >> n >> k;
fin.close();
back(1);
fout.close();
return 0;
}