#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int a[19],sol[19],n,m;
void load(){f>>n>>m;}
void dload(){for (int i=1;i<=m;i++) g<<sol[i]<<' '; g<<'\n';}
void back(int k){if (k>m) dload();else for (int i=sol[k-1]+1;i<=n;i++){sol[k]=i;back(k+1);}}
int main()
{
    load(),back(1);
    return 0;
}