#include <iostream>
using namespace std;
int main(){
int n;
cin >> n;
int arr[n];
for(int i =0;i< n;i++){
cin >> arr[i];
}
for (int i = 0; i < n; i++)
{
for (int j = i; j < n; j++)
{
for (int k = i; k <= j; k++)
{
cout << arr[k] << " ";
}
cout << endl;
}
}
return 0;
}