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#include <cstdio>
#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n, k;
int V[20];
void afis()
{
for(int i = 1; i <= k; ++i)
g<<V[i];
g<<"\n";
}
void back(int nr)
{
if( nr == k )
afis();
else
{
for(int i = V[nr] + 1; i <= n - (k - nr - 1) ; ++i)
{
V[nr + 1] = i; back(nr + 1);
}
}
}
int main()
{
f>>n>>k;
back(0);
return 0;
}