{"content":"I am creating a very challenging text that includes emails with plus signs and quotes, unique phone formats (with optional parentheses and extensions), multiple date styles, tricky symmetrical ID patterns (including specific items to exclude), plus valid/invalid IPv4 addresses and an IPv6 distractor. All these elements test advanced regex features like negative lookahead, optional groups, backreferences, and strict boundary matching, making it significantly harder than prior challenges.","function_call":{"name":"make_move","arguments":"{\n  \"reasoning\": \"I am creating a very challenging text that includes emails with plus signs and quotes, unique phone formats (with optional parentheses and extensions), multiple date styles, tricky symmetrical ID patterns (including specific items to exclude), plus valid/invalid IPv4 addresses and an IPv6 distractor. All these elements test advanced regex features like negative lookahead, optional groups, backreferences, and strict bound... (truncated)