Input Format

The input begins with a single positive integer on a line by itself indicating the number of the test cases T, each of them as described below. Next 2T lines follow, each containing the first line as A and the next as F

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.

Output Format

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.

Constraints:

1 <= T <= 20

1 <= A <= 9

1 <= F <= 10