#include <cstdlib>
#include <fstream>
#include <iterator>
#define Nmax 20

/*
 *
 */
using namespace std;
ofstream out( "combinari.out" );
int N, K;
int v[Nmax];
inline void back( int k )
{
    if( K == k-1 )
    {
        copy( v+1, v+k, ostream_iterator<int>( out, " " ) );
        out<<'\n';
    }
    else for( int i=v[k-1]+1; i <= N-K+k; ++i )
         {
             v[k]=i;
             back( k+1 );
         }
}
int main( void )
{
    ifstream in( "combinari.in" );
    in>>N>>K;
    back( 1 );
    return EXIT_SUCCESS;
}