#include <bits/stdc++.h>

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


int n,m,s[25];

void back(int i)
{
    if(i==m+1)
    {
        for(int j=1;j<=m;j++)
            fout<<s[j]<<" ";
        fout<<"\n";
    }
    for(int j=s[i-1]+1;j<=n;j++)
    {
        s[i]=j;
        back(i+1);
    }
}

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