#include <iostream>
#include <fstream>
#define NMAX 20
using namespace std;
int N,K,x[NMAX],viz[NMAX];
void bkt(int k)
{
    if(k==K+1)
    {
        for(int i=1; i<=K; i++)
            cout<<x[i]<<' ';
        cout<<'\n';
    }
    else
        for(int i=x[k-1]+1; i<=N; i++)
            if(!viz[i])
            {
                x[k]=i;
                viz[i]=1;
                bkt(k+1);
                viz[i]=0;
            }
}
int main()
{
    freopen("combinari.in","rt",stdin);
    freopen("combinari.out","wt",stdout);
    cin>>N>>K;
    bkt(1);
}