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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
int n, k;
int c[20];
bool used[20];
void write()
{
for(int i = 1; i <= k; i++)
out << c[i] << ' ';
out << '\n';
}
void gen(int pos)
{
if(k < pos)
write();
else
{
for(int i = c[pos - 1] + 1; i <= n; i++)
{
c[pos] = i;
gen(pos + 1);
}
}
}
int main()
{
in >> n >> k;
gen(1);
in.close();
out.close();
return 0;
}