#include <bits/stdc++.h>

using namespace std;

int N,v[20];
bool viz[20];

void back(int k){

    for(int i=v[k-1]+1 ; i<=N ; ++i)
    {
        //if(!viz[i]){
            //viz[i]=1;
            v[k]=i;
            for(int j=1;j<=k;j++)
                    printf("%d ",v[j]);
            printf("\n");
            if(k<N)back(k+1);
            //viz[i]=0;
        //}

    }

}

int main()
{
    freopen("submultimi.in","r",stdin);
    freopen("submultimi.out","w",stdout);
    scanf("%d",&N);
    back(1);
}