#include <bits/stdc++.h>
using namespace std;
//
#define ll long long
#define ull unsigned long long
#define mx 100010
#define mod 1000000007
#define inf INT_MAX
#define pi acos(-1.0)
#define endl '\n'
#define pb push_back
#define pll pair<ll, ll>
#define vll vector<ll>
#define vpll vector<pll>
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
//
int main() {
    ll n;
    cin >> n;
    ll ar[n];
    for (ll i = 0; i < n; i++) cin >> ar[i];
    for (ll i = 0; i < n; i++) {
        ll temp = i;
        for (ll j = i; j < n; j++) {
            ll temp1 = j;
            while (temp <= temp1) cout << ar[temp++];
            temp = i;
            cout << endl;
        }
    }
}