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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
#define NMAX 18
int n,p,v[NMAX+1];
void afis(int k)
{
for (int i=1; i<=k; i++)
fout << v[i] << " ";
fout << '\n';
}
void backtr(int k)
{
for (int i=v[k-1]+1; i<=n; i++)
{
v[k]=i;
if (k==p)
afis(k);
else
backtr(k+1);
}
}
int main()
{
fin >> n >> p;
backtr(1);
return 0;
}