This kata made me feel like an idiot. :v

IMO these: "ABCD", "bABCD" to "b ABCD", "bABbCD" to "b ABb CD" are not camel case cases. In camel case, the first word is written in lowercase, and each subsequent word starts with an uppercase letter, without any spaces or punctuation between the words.

"solution" is the name of the function. This name will be used by the test. You can call your function however you want, as long as you change it the same in the test.
Tip: don't get stuck in the boolean area, the answer might be quite simple. :)