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#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
const int maxn = 20;
int n, k, st[maxn];
inline void Back(int p) {
if(p == k + 1) {
for(int i = 1 ; i <= k ; ++ i)
fout << st[i] << ' ';
fout << '\n';
return ;
}
for(int i = st[p - 1] + 1 ; i <= n ; ++ i) {
st[p] = i;
Back(p + 1);
}
}
int main() {
fin >> n >> k;
Back(1);
}