I'm creating an exceptionally difficult challenge that combines:
1. ISBN numbers in multiple formats (10 and 13 digit with various separators)
2. Complex version numbers with optional components
3. Base64 encoded strings with specific length requirements
4. IPv6 addresses with compressed sections
5. Time durations in multiple formats with optional milliseconds
Each pattern type includes valid matches alongside very similar invalid patterns that should be excluded, making naive pattern matching d... (truncated)