Given an integer `n`, return a list of all simplified fractions between `0` and `1` (exclusive) such that the denominator is less-than-or-equal-to `n`. You can return the answer in any order.

Example 1:

    Input: n = 2
    Output: ["1/2"]
    Explanation: "1/2" is the only unique fraction with a denominator less-than-or-equal-to 2.

Example 2:

    Input: n = 3
    Output: ["1/2","1/3","2/3"]

Example 3:

    Input: n = 4
    Output: ["1/2","1/3","1/4","2/3","3/4"]
    Explanation: "2/4" is not a simplified fraction because it can be simplified to "1/2".

Constraints:

- `1 <= n <= 100`