#include<fstream>
using namespace std;
int x[50], n, p;
ifstream in ("combinari.in");
ofstream out ("combinari.out");
void print ( int k)
{
    for( int i = 1; i <= k; i ++)
        out << x[i] << " ";
    out << '\n';
}
void bkt ( int k )
{
    if (k == p + 1)
        print (p);
    for(int i = x[k-1] + 1;i <= n; i ++) {
        x[k] = i;
        bkt(k + 1);
    }

}
int main ()
{
    in >> n >> p;
    bkt (1);
    return 0;
}