#include <fstream>
#define f in
#define g out

using namespace std;
ifstream in ( "combinari.in" );
ofstream out( "combinari.out" );
int fr[20], v[20];
int n, m;

void back ( int poz ){
    if ( poz > m ){
        for ( int i=1; i <= m; i++ )
            g<<v[i]<<" ";
        g<<"\n";
        return;
    }
    for ( int i = v[poz-1]+1; i <= n; i++ ){
            v[poz] = i;
            back( poz+1 );
        }
}


int main() {
    f>>n>>m;
    back ( 1 );
    return 0;
}