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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n, k, ans[19];
void gen(int len) {
if (len == k + 1) {
for (int i = 1; i < len; ++i) {
fout << ans[i] << ' ';
}
fout << '\n';
return;
}
for (int i = ans[len - 1] + 1; i <= n; ++i) {
ans[len] = i;
gen(len + 1);
}
}
int main() {
fin >> n >> k;
gen(1);
return 0;
}