Given a string `s`, reverse the string according to the following rules:

- All the characters that are not English letters remain in the same position.
- All the English letters (lowercase or uppercase) should be reversed.

Return `s` after reversing it.

Example 1:

    Input: s = "ab-cd"
    Output: "dc-ba"

Example 2:

    Input: s = "a-bC-dEf-ghIj"
    Output: "j-Ih-gfE-dCba"

Example 3:

    Input: s = "Test1ng-Leet=code-Q!"
    Output: "Qedo1ct-eeLg=ntse-T!"

Constraints:

- `1 <= s.length <= 100`
- `s` consists of characters with ASCII values in the range `[33, 122]`.
- `s` does not contain `'\"'` or `'\\'`.