{"text": "Welcome to the ultimate regex gauntlet! \n\nIn this challenge, hidden among layers of text, you will find a series of items that test the very limits of your regex abilities. Beware: there are decoys that might look nearly correct but are not valid targets.\n\nFor instance, you might see an email like first.last@very-deep.sub-domain.example-mail.co or even a split version like first.last+filter@very-deep.sub-domain.example-mail.co .uk, but only one is the true target.\n\nNow, examine the following list of treasures:\n\n1. Electronic contact: first.last+filter@very-deep.sub-domain.example-mail.co.uk\n2. Phone details: +49 (89) 636-48018; note that another format such as +49 89 636-48018 might appear elsewhere.\n3. Alternative phone: 0044-7911-123456 (watch out for similar numbers with spaces instead of dashes).\n4. Special date (leap day): 29-02-2024\n5. Date with dots: 15.07.2023\n6. American style date: 07/15/2023\n7. Network address (IPv4): 192.168.100.200\n8. Network address (IPv6 abbreviated): fe80::1ff:fe23:4567:890a\n9. Unique identifier (UUID): 987fbc97-4bed-5078-9f07-9141ba07c9f3\n10. Encoded data: U29tZV9TdHJpbmctV2l0aF9feG5ucw==\n11. Markup snippet: <div class=\"container\" id=\"main\">Content</div>\n12. Code sample: function solve(a, b) { return (a+b)*(a-b); }\n13. Regex pattern with backreference: pattern: (\\w+)-\\1\n14. Secure endpoint: https://deep.example-domain.com:9090/api/v3/resource?token=abc123XYZ&mode=advanced#section-2\n15. Advanced regex test: regex test: (?<!\\d)\\d{2,4}(?!\\d)\n\nAdditional misleading lines and nearly-correct entries are scattered throughout this text. Your task is to craft a regex that matches exactly the 15 items listed above, and none of the decoys. Good luck, regex master!", "targetItems": ["first.last+filter@very-deep.sub-domain.example-mail.co.uk", "+49 (89) 636-48018", "0044-7911-123456", "29-02-2024", "15.07.2023", "07/15/2023", "192.168.100.200", "fe80::1ff:fe23:4567:890a", "987fbc97-4bed-5078-9f07-9141ba07c9f3", "U29tZV9TdHJpbmctV2l0aF9feG5ucw==", "<div class=\"container\" id=\"main\">Content</div>", "function solve(a, b) { return (a+b)*(a-b); }", "pattern: (\\w+)-\\1", "https://deep.example-domain.com:9090/api/v3/resource?token=abc123XYZ&mode=advanced#section-2", "regex test: (?<!\\d)\\d{2,4}(?!\\d)"]}