#include <iostream>
#include <fstream>
#define N 19
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n,K;
int x[N];

void Write()
{int i;
 for(i=1;i<=K;i++)
    fout<<x[i]<<" ";
 fout<<endl;
}


void Back(int k)
{int i;
 if(k==K+1) Write();
 else
  for(i=x[k-1]+1;i<=n-K+k;i++)
    {x[k]=i;
     Back(k+1);
    }
}

int main()
{fin>>n>>K;
 Back(1);
 return 0;
}