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Advanced Regular Expressions that Regex Generator AI tool can generate:

1. Basic Expressions: Generate basic regular expressions to match simple patterns such as alphanumeric characters, digits, non-alphanumeric characters, etc.

2. Character Classes: Generate regular expressions to match specific characters or sets of characters. This includes generating expressions for matching uppercase letters, lowercase letters, spaces, punctuation marks, etc.

3. Quantifiers: Generate regular expressions to define the number of times a pattern can occur. This includes generating expressions for matching zero or more occurrences, one or more occurrences, zero or one occurrence, a specific number of occurrences, etc.

4. Grouping and Capturing: Generate regular expressions to group patterns together and capture specific parts of the matched text. This includes generating expressions for matching and capturing multiple patterns, matching either one pattern or another, creating named capture groups, etc.

5. Anchors: Generate regular expressions with anchor characters to match patterns at specific positions in the text. This includes generating expressions for matching patterns at the beginning or end of the text, word boundaries, line breaks, etc.

6. Modifiers: Generate regular expressions with modifiers to modify the behavior of the matching patterns. This includes generating expressions for case-insensitive matching, multiline matching, global matching, etc.

7. Lookaheads and Lookbehinds: Generate regular expressions with lookaheads and lookbehinds to match patterns based on the presence or absence of other patterns ahead or behind the current position. This includes generating expressions for positive and negative lookaheads and lookbehinds.

8. Character Escapes: Generate regular expressions with character escapes to match special characters or to match characters in specific character sets. This includes generating expressions for matching digits, whitespace characters, non-word characters, etc.

9. Backreferences: Generate regular expressions with backreferences to match the same text that was previously matched by a capturing group. This includes generating expressions for matching duplicated words, duplicate characters, etc.

10. Advanced Patterns: Generate regular expressions for advanced patterns such as email addresses, URLs, phone numbers, credit card numbers, IP addresses, etc.

11. Customization Options: Provide options to customize the generated regular expressions such as choosing the programming language (e.g., Python, JavaScript, Java) and the delimiter used in the generated expression.

12. Code Snippet Integration: Provide the generated regular expression as a code snippet in the selected programming language.

These advanced regular expressions generated by the Regex Generator AI tool are aimed at helping users efficiently match and extract patterns from text data using the power of regular expressions.