Triangle Wave

In this problem you are to generate a triangular wave form according to a specified pair of Amplitude and Frequency.

Input and Output

The input begins with a single positive integer on a line by itself indicating the number of the cases following, each of them as described below. This line is followed by a blank line, and there is also a blank line between two consecutive inputs.

Each input set will contain two integers, each on a separate line. The first integer is the Amplitude; the second integer is the Frequency.

For each test case, the output must follow the description below. The outputs of two consecutive cases will be separated by a blank line.

For the output of your program, you will be printing wave forms each separated by a blank line. The total number of wave forms equals the Frequency, and the horizontal ``height'' of each wave equals the Amplitude. The Amplitude will never be greater than nine.

The waveform itself should be filled with integers on each line which indicate the ``height'' of that line.

NOTE: There is a blank line after each separate waveform, excluding the last one.

Sample Input

1 

3

2

Sample Output

1

22

333

22

1

1

22

333

22

1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace Scores
{
    class Program
    {
        static void Main(string[] args)
        {
            string s1 = Console.ReadLine();
            string s2 = Console.ReadLine();
            int amp = int.Parse(s1);
            int freq = int.Parse(s2);
            int j = 0;
            for (int i = 0; i < freq; i++)
            {
                //For increasing side.
                while (j < amp)
                {
                    j++;
                    for (int k = 0; k < j; k++)
                    {
                        Console.Write(j);
                    }
                    Console.WriteLine();
                }
                //For decresing side.
                while (j > 0)
                {
                    j--;
                    for (int k = 0; k < j; k++)
                    {
                        Console.Write(j);
                    }
                    Console.WriteLine();
                }
            }
        }
    }
}