The pattern is built as follows:
1. Passwords: Used exact matches since they're specific strings with special characters
2. IPv6: Handles both full format (with 0000:0000) and compressed formats (with ::)
3. Credit cards: Matches the specific formats - 16 digits with dashes/spaces, and 15 digit formats
4. Currency amounts: Matches the specific formats with different currency symbols, handling optional thousands separators

The pattern uses alternation (|) to match any one of these different formats. Each part is carefully constructed to match only the exact target strings and avoid matching similar but invalid items in the text.