PROGRAMMING:Inverted output upper triangular digital array
This problem requires the preparation of procedures, * * reverse * * output n lines from the designated number of the upper 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:
**Reverse * * outputs the upper left triangle array with n rows starting from M. The format is shown in the output sample, where there is a space after each number.
###Input example:
```in
3 9
```
###Output example:
```out
9 8 7
6 5
four
```
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:
**Reverse * * outputs the upper left triangle array with n rows starting from M. The format is shown in the output sample, where there is a space after each number.
###Input example:
```in
3 9
```
###Output example:
```out
9 8 7
6 5
four
```
answer：If there is no answer, please comment