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I'm trying to create a regex that will validate a string that only consists of Pascal case and is limited to 10 characters.

What I've got so far is based on Alix Axel's answer to the following question: Regex that matches Camel and Pascal Case

So the regex I'm using to validate for Pascal case is:

^[A-Z][a-z]+(?:[A-Z][a-z]+)*$

But, I'm unable to limit this string to a defined amount of characters, I've tried using a quantifier in several places, but I can't get it to work the way I expect it to.

For instance, I would expect the following regex to validate for Pascal case and limit the amount of characters in the string to 5 characters

^[A-Z][a-z]+(?:[A-Z][a-z]+){0,4}$

But it actually validates the casing of the string (upper-case character followed by lower-case characters) 5 times over and won't match the 6th occurrence. E.g. the above will match the RegexCanBeHardSometimes string, but won't match the RegexCanBeHardSomeTimes string

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