#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");

int N, used[20], st[20], K;

void afisare(int top)
{
    for (int i=1; i<=top; ++i)
        g<<st[i]<<' '; g<<'\n';
}

void back(int top)
{
    for (int i=st[top-1]+1; i<=N; ++i)
        if (!used[i])
        {
            st[top]=i; used[i]=1;
            afisare(top); back(top+1);
            used[i]=0;
        }
}


int main()
{
    f>>N;
    back(1);
    return 0;
}