#include<bits/stdc++.h>

#define all(s) s.begin(),s.end()
#define rc(x) return cout<<x<<endl,0
#define forn(i,n) for(int i=0;i<int(n);i++)

#define pb push_back
#define mp make_pair
#define fr first
#define sc second

typedef long long ll;
typedef long double ld;

const int nmax=2e5+3;
const int mod=666013;
const ll inf=0x3f3f3f3f3f3f3f3f;

using namespace std;

int n,v[20];

void back(int k)
{
    for(int i=v[k-1]+1;i<=n;i++)
    {
        v[k]=i;
        for(int j=1;j<=k;j++) cout<<v[j]<<" ";
        cout<<"\n";
        back(k+1);
    }
}

int main()
{
  freopen("submultimi.in","r",stdin);
  freopen("submultimi.out","w",stdout);
  ios_base::sync_with_stdio(0); cin.tie(0);
  cin>>n;
  back(1);
}