#include <iostream>
#include <fstream>
using namespace std;
int sol[100],n;
void bkt(int k,int i)
{
    if(k<=n)
    {
        for(k=k;k<=n;k++)
        {
            sol[i]=k;
            for(int j=1;j<=i;j++)
                printf("%d ",sol[j]);
            printf("\n");
            bkt(k+1,i+1);
        }
    }
}
int main()
{
    freopen("submultimi.in","r",stdin);
    freopen("submultimi.out","w",stdout);
    scanf("%d",&n);
    bkt(1,1);
    return 0;
}