#include <fstream>

using namespace std;
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int n, s[20], k, b;

void submultimi (int l) {
    if (l > k) {
        for (int i = 1; i <= k; i++)
            fout << s[i] << " ";
        fout << "\n";
        return;
    }
    for (int i = s[l-1]+1; i <= n; i++) {
        s[l] = i;
        submultimi(l+1);
    }
}

int main()
{
    fin >> n;
    for (k = 1; k <= n; k++)
        submultimi(1);
    return 0;
}