{"text": "Below is the ultimate regex gauntlet:\n\n1) E-mails:\n   - Valid:  sample.test+filtered@sub.example.co.uk, user+alias@domain-x.edu, \"quoted.name\"@strange-domain.info\n   - Invalid: sample@@double-ats.com, user@non.existent TLD, user@domain,com (comma instead of dot)\n\n2) Phone numbers:\n   - Valid:  +1 (202) 555-0147 ext. 105, 202-555-0199, +44 (0) 20 7123 4567\n   - Invalid: +1-202-555, 020) 1234-567 (missing parentheses), 555-012-3456 (too few digits)\n\n3) Dates:\n   - Valid:  2023-12-31, 31/12/2023, 12.31.2023, 31 Jan 2023\n   - Invalid: 2023.31.12 (mixed order), 31/13/2023 (month out of range)\n\n4) Reference IDs:\n   - Valid:  INV-2023-ABCD, REF#XF-9999, ID:EE-12345, TCK-abc-001\n   - Invalid: INV-2023- (missing segment), ABCD-123-?? (invalid symbols)\n\n5) Misc:\n   - Potential traps: a (202) near parentheses mismatch, user@domain,, (double commas), partially quoted “names”, or phone formats missing key pieces.\n\nChallenge text to find the valid items:\n\n\"If you need support, contact sample.test+filtered@sub.example.co.uk or call +1 (202) 555-0147 ext. 105 right away. We also accept emails at user+alias@domain-x.edu or weird addresses like user@domain,com (which is invalid). For UK residents, dial +44 (0) 20 7123 4567. Our old numbers like +1-202-555 or 555-012-3456 are incomplete.\n\nDates can be typed as 2023-12-31 or 31 Jan 2023. Please do not use 2023.31.12 or 31/13/2023. We support 31/12/2023 or 12.31.2023 with different separators. Reference IDs like INV-2023-ABCD or TCK-abc-001 are acceptable, but be wary of ABCD-123-?? which is not. Also, \"quoted.name\"@strange-domain.info is a valid email, while sample@@double-ats.com is not.\n\nDon’t forget the extension (ext. 105) in phone numbers, or the correct “quoted.name” format. Our official reference code is REF#XF-9999 and ID:EE-12345. Watch out for tricky near-valid formats like 020) 1234-567 which has mismatched parentheses.\n\"\n", "targetItems": ["sample.test+filtered@sub.example.co.uk", "user+alias@domain-x.edu", "\"quoted.name\"@strange-domain.info", "+1 (202) 555-0147 ext. 105", "202-555-0199", "+44 (0) 20 7123 4567", "2023-12-31", "31/12/2023", "12.31.2023", "31 Jan 2023", "INV-2023-ABCD", "REF#XF-9999", "ID:EE-12345", "TCK-abc-001"]}