#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

short N;

void solve(int M, int k, vector<int> &REZ)
{
    if(k == M + 1)
    {
        for(int i=1;i<=M;++i)
        {
            cout<<REZ[i]<<" ";

        }
        cout<<"\n";
    }
    else
        for(int i=1+REZ[k-1];i<=N-M+k;++i)
        {
                REZ[k] = i;
                solve(M, k + 1, REZ);
        }
}

int main()
{

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

    scanf("%hd", &N);

    vector<int> REZ(N, 0);

    for(int i=1;i<=N;++i)
        solve(i, 1, REZ);

    return 0;
}