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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
#define cout fout
int a[20], n, m;
int bak(int k)
{
int i;
for(i = a[k - 1] + 1 ; i <= n ; i++)
{
a[k] = i;
if(k == m)
{
for(int j = 1 ; j <= k ; j++)
{
cout << a[j] << " ";
}
cout << "\n";
}
else
{
bak(k + 1);
}
}
}
int main()
{
fin >> n >> m;
bak(1);
}