Given an integer n, return all the strobogrammatic numbers that are of length n. You may return the answer in any order.

A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down).

 

Example 1:

Input: n = 2
Output: ["11","69","88","96"]

Example 2:

Input: n = 1
Output: ["0","1","8"]

 

Constraints:

• 1 <= n <= 14