#include <fstream>

using namespace std;

ifstream fin("combinari.in");
ofstream fout("combinari.out");

inline void Comb(int n,int k,int *v,bool f[],int lg)
{
    if(lg==k+1)
    {
        for(int i=1; i<=k; ++i)
            fout<<v[i]<<" ";
        fout<<"\n";
    }
    else
    {
        for(int i=v[lg-1]+1; i<=n; ++i)
            if(!f[i])
            {
                f[i]=1;
                v[lg]=i;
                Comb(n,k,v,f,lg+1);
                f[i]=0;
            }
    }
}

int main()
{
    int n,k,v[20];
    bool f[20]={0};
    fin>>n>>k;
    Comb(n,k,v,f,1);

    return 0;
}