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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
int v[20],n,k;
void bactrack(int q)
{
if(q==k)
{
for(int i=1; i<=k; i++)
{
out << v[i] << " ";
}
out << '\n';
}
else
{
for(int i=v[q]+1; i<=n; i++)
{
v[q+1]=i;
bactrack(q+1);
}
}
}
int main()
{
in >> n >> k;
bactrack(0);
return 0;
}