#include<fstream>
using namespace std;

ifstream fi("combinari.in");
ofstream fo("combinari.out");
     
int n,m,a[100],i;

void back(int k)
{
         int i;
         if (k==m+1){for(i=1;i<=m;++i)fo<<a[i]<<" \n"[i==m];}
         else for(i=a[k-1]+1;i<=n;++i)
                 {
                  a[k]=i;
                  back(k+1); 
                 } 
}
int main(){
     fi>>n>>m;
     back(1);
     return 0;
}