#include <cstdio>
using namespace std;

int v[17], n;

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

void back(int k)
{
    if (k <= n)
    for (int i = v[k-1] + 1; i <= n; ++i){
        v[k] = i;
        write(k);
        back(k + 1);
    }
}

int main()
{
    freopen("submultimi.in", "r", stdin);
    freopen("submultimi.out", "w", stdout);

    scanf("%d", &n);
    back(1);

   return 0;
}