import java.util.Arrays;
import java.util.Scanner;

public class SubArrayTest {

	public static void main(String[] args) {
        Scanner scan=new Scanner(System.in);
        int n=scan.nextInt();
        int a,b,i,j,k;
        int[] array=new int[n];
         for(i=0;i<n;i++)
            {
             int x=scan.nextInt();
             array[i]=x;
        }
        for( i=0;i<array.length;i++){
            for(j=i+1;j<=array.length;j++)
                {
                 a=i;
                 b=j;
        int  b1[]= Arrays.copyOfRange(array,a,b);
        System.out.println(Arrays.toString(b1));
                }

            }
    }
}