#include <iostream>
#include <fstream>
#define MAXN 17
#define INFILE "submultimi.in"
#define OUTFILE "submultimi.out"
using namespace std;
ifstream f(INFILE);
ofstream g(OUTFILE);
int n,v[MAXN];
bool use[MAXN];
void bkt(int k)
{
    for(int j,i=v[k-1]+1;i<=n;i++)
        if(!use[i])
        {
            use[i]=1;
            v[k]=i;
            for(j=1;j<=k;j++)
                g<<v[j]<<" ";
            g<<'\n';
            if(k<n)bkt(k+1);
            use[i]=0;
        }
}
int main()
{
    f>>n;
    bkt(1);
    f.close();
    g.close();
    return 0;
}