#include <cstdio>

using namespace std;
int n,k,i,sol[20],a[20];
void afis (int k)
{
    for (i=1;i<=k;i++)
        printf ("%d ", a[sol[i]]);
    printf ("\n");
}
void back (int k)
{
    int i;
    if (k<=n)
    {
        for (i=sol[k-1]+1;i<=n;i++)
        {
            sol[k]=i;
            afis (k);
            back (k+1);
        }
    }
}
int main()
{
    freopen ("submultimi.in","r",stdin);
    freopen ("submultimi.out","w",stdout);
    scanf ("%d", &n);
    for (i=1;i<=n;i++)
        a[i]=i;
    back (1);
    return 0;
}