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

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

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.

3
2

1
22
333
22
1

1
22
333
22
1