The pattern consists of several parts to match different types of target items. For emails, it uses [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,} to match common email address formats. For phone numbers, it uses +1s(d{3})sd{3}-d{4}s(ext.d{3})|0044-d{2}-d{4}-d{4} to match the given phone number formats. For dates, it uses d{4}-d{2}-d{2}|d{2}/d{2}/d{4} to match both date formats. For special IDs, it uses [A-Z]{2}-d{3}-[A-Z]{2} to match the ID format where the first two and last two characters are letters and the middle part is numbers.