PROGRAMMING:Reverse order output lower triangular digital array
This problem requires the preparation of procedures, * * reverse * * output n lines from the designated number of the lower left triangle digital array.
###Input format:
The input gives a positive integer n (1 ≤ n < 7) and a positive integer m in one line.
###Output format:
In reverse order, the array of N rows of left lower triangles starting from M is output. The format is shown in the output sample, where there is a space after each number.
###Input example:
```in
4 9
```
###Output example:
```out
nine
8 7
6 5 4
3 2 1 0
```
answer：If there is no answer, please comment
###Input format:
The input gives a positive integer n (1 ≤ n < 7) and a positive integer m in one line.
###Output format:
In reverse order, the array of N rows of left lower triangles starting from M is output. The format is shown in the output sample, where there is a space after each number.
###Input example:
```in
4 9
```
###Output example:
```out
nine
8 7
6 5 4
3 2 1 0
```
answer：If there is no answer, please comment