Create a Kotlin function to determine whether two given strings are anagrams of each other, ignoring case and any non-alphabetic characters. An anagram uses all the original letters exactly once.

Task Description:

1. Implement a function named isAnagram that takes two strings as input.
2. The function should return true if the two strings are anagrams of each other (case-insensitive) and false otherwise.
3. Ignore non-alphabetic characters when determining anagrams.

1. Fill in the code.
2. You can copy the code into IntelliJ/Android Studio, but it shouldn’t be necessary.
3. Click “run” – the green triangle. The code will compile and several tests will be run.
4. In the logs, you will see “try again” if the solution is incorrect, or “success” and a special code.
5. Provide this code in the form below along with your email and click “send”.