Decyphering description: 1 kyu
Solving kata: 7-8 kyu

Read the second issue posted by Voile below where I've already made an attempt to reword this kata's description.

I've re-read the problem description more than a dozen times, and I've even passed it through Google Translate with no luck.
Simply....what is the program supposed to do?!?!

As confusing as it is, you have to count the number of l, o, v, e and s (case insensitive) in both names (together) and that's the starting list.
So I think:

Then count the number of occurrences of the letters in "Loves" case insensitive with each name as follows:

Should be:

Then count the number of occurrences of the letters in "Loves" case insensitive in both names (together) as follows:

Or better.

Hey there! I think your isPrime function wrongly calculates 2 as not being prime. This means given List(1, 1) the minimumNumber function will return 1, instead of 0.

Needs random tests

Description is very unclear. e.g

John Doe
Loves
Jane Doe

Then count the number of occurrences of the letters in "Loves" case insensitive with each name as follows:
0, 3, 0, 3, 0

Isn't it 1, 2, 0, 1, 2 or something?

This is true but not for the given test cases :)

For some pairs of names, the adding process will not terminate.

For example if LLLLLLLLLOOOOOOOOOVVVVVVVVV loves EEEEEEEEESSSSSSSSS, the counting will be [9, 9, 9, 9, 9].

Try to adding the pairs:

The first step gives [1, 8, 1, 8, 1, 8, 1, 8],
The second step gives [9, 9, 9, 9, 9, 9, 9] ...

Therefore a longer and longer [1, 8, ...] serial and [9, ...] serial will be generated.

Works now! :-)

Sorry I screwed up the kata :(, fixed it now though. Your solution should be correct if the test cases/solution was done correctly!

OK, I'm passing everything but this one, but can't figure out what would be wrong with it:

 Han Solo Leia Organa
[2, 3, 0, 1, 1]
[5, 3, 1, 2]
[8, 4, 3]
[1, 2, 7]
[3, 9]
39%
✘ Value is not what was expected 

Usually I just wait for other people to post questions like this. :-)