How to make a pattern that check that all the first letter should be capital?

I need a pattern on angular that checks only if the first letter of each word will be capital. To Make something like this I am using this pattern

pattern ="^([A-Z][a-z]*((\\s[A-Za-z])?[a-z]*)*)$"


1-works only for the first letter

2- when I have for example 2 fails, I want to check the first letter of strings.

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