**Write a function f(n,k) that displays the k-dimensional countdown from n.**

A 1-dimensional countdown from 5 looks like

     54321

A 2-dimensional countdown from 5 looks like

     54321
     4321
     321
     21
     1

Finally, a 3-dimensional countdown from 5 looks like

     54321
     4321
     321
     21
     1
     4321
     321
     21
     1
     321
     21
     1
     21
     1
     1

## Formal definition ##

The 1-dimensional countdown from any n is a single line with the digits n, n-1,...,1 concatenated (followed by a newline).

For any k, the k-dimensional countdown from 1 is the single line

     1

For n > 1 and k > 1, a k-dimensional countdown from n is a (k-1)-dimensional countdown from n followed by a k-dimensional countdown from n-1.

## Input ##

Two positive integers k and n <= 9, in any format you choose.

## Output ##

The k-dimensional countdown from n, with a newline after each 1-dimensional countdown. Extra newlines are permitted in the output.

**Edit:** Digits on a line do not need to be adjacent, but they must be evenly-spaced.

## Scoring ##

Standard golf scoring. 

## Bonus example ##

Here's an example with k > n, a 4-dimensional countdown from 3 (with extra comments that are not to be included in actual solutions):

     -- 3-dimensional countdown from 3
     321
     21
     1
     21
     1
     1
     -- 4-dimensional countdown from 2:
     ---- 3-dimensional countdown from 2:
     21
     1
     1
     ---- 4-dimensional countdown from 1:
     1