When using

new RgxGen("^((?!(BG|GB|KN|NK|NT|TN|ZZ)|(D|F|I|Q|U|V)[A-Z]|[A-Z](D|F|I|O|Q|U|V))[A-Z]{2})[0-9]{6}[A-D]?$").generate();

the following String is generated '">MO281733' which does not conform to the regular expression.

To Reproduce
Steps to reproduce the behavior:

1. With regex pattern '^((?!(BG|GB|KN|NK|NT|TN|ZZ)|(D|F|I|Q|U|V)[A-Z]|[A-Z](D|F|I|O|Q|U|V))[A-Z]{2})[0-9]{6}[A-D]?$'

2. Use code/API - Code

3. See error
   Invalid String is returned '">MO281733'

Expected behavior
A clear and concise description of what you expected to happen.

I expect a string such as 'AA222222D' to be return as this is valid against the regex however this is not the case

Screenshots
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Environment (please complete the following information):

• OS: [e.g. iOS] Windows 10

• JDK/JRE version
  java version "14.0.1" 2020-04-14
  Java(TM) SE Runtime Environment (build 14.0.1+7)
  Java HotSpot(TM) 64-Bit Server VM (build 14.0.1+7, mixed mode, sharing)

• RgxGen Version or commit id

	        <dependency>
			<groupId>com.github.curious-odd-man</groupId>
			<artifactId>rgxgen</artifactId>
			<version>1.3</version>
		</dependency>

Additional context
Add any other context about the problem here.