#include <iostream>
#include <cstdio>
using namespace std;

int n,v[100];
FILE *intrare,*iesire;

void backtracking (int pos)
{
    int i,t=0;
    if (pos==n)
    {
        for (i=0; i<=n-1; ++i)
        {
            if (v[i]==1)
            {
                fprintf(iesire,"%d ",i+1);
            }
            else
                ++t;
        }
        if (t!=3)
            fprintf(iesire,"\n");
    }
    else
    {
        for (i=0; i<=1; ++i)
        {
            v[pos]=i;
            backtracking(pos+1);
        }
    }
    t=0;
}

int main()
{
    intrare=fopen("submultimi.in","r");
    iesire=fopen("submultimi.out","w");
    fscanf(intrare,"%d",&n);
    backtracking(0);
}