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#include <bits/stdc++.h>
#define ll long long
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n, k, v[21];
void gen(int x) {
if(x == k) {
for(int i = 1; i <= k; i++)
fout << v[i] << ' ';
fout << '\n';
}
else
for(int i = v[x] + 1; i <= n; i++) {
v[x + 1] = i;
gen(x + 1);
}
}
int main() {
fin >> n >> k;
gen(0);
return 0;
}