#include <cstdio>

using namespace std;

int n;
int a[20];

void afis(int k){
    for (int i = 1; i <= k; ++ i){
        printf ("%d ", a[i]);
    }
    printf ("\n");
}

void back(int k)
{
    if (k > n){
        return;
    }
    for (int i = a[k - 1] + 1; i <= n; ++ i){
        a[k] = i;
        afis(k);
        back(k + 1);
    }
}

int main()
{
    freopen ("submultimi.in", "r", stdin);
    freopen ("submultimi.out", "w", stdout);
    scanf ("%d", &n);
    back(1);

    return 0;
}