/******************************************************************************

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*******************************************************************************/

#include <iostream>
#include <fstream>
#define Max 2147483647

using namespace std;

ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

int n, x[20]= {0};

void afisare(int k)
{
    for(int i=1; i<=k; i++)
    {
        fout<<x[i]<<" ";
    }
    fout<<"\n";
}
void backtrack(int k)
{
    for(x[k]=x[k-1]+1; x[k]<=n; x[k]++)
    {
        if(k<=n)
        {
            afisare(k);
            backtrack(k+1);
        }
    }
}
int main()
{

    fin>>n;
    backtrack(1);
    return 0;
}