?repeats the group contents below at most once:
Emthe literal text Em (case sensitive) \sany whitespace character
\d{1,2}a digit, repeated between 1 and 2 times
\sany whitespace character
dethe literal text de (case sensitive) \sany whitespace character
\w+any word character, repeated at least once
\sany whitespace character
dethe literal text de (case sensitive) \sany whitespace character
\d{4}a digit, repeated exactly 4 times
\sany whitespace character
?repeats the group contents below at most once:
àsthe literal text às (case sensitive) \sany whitespace character
\d{1,2}a digit, repeated between 1 and 2 times
:the literal : (5810 / 728 / 3A16)
\d{1,2}a digit, repeated between 1 and 2 times
Group 4([^@]+@\w+\.\w+\.\w+|,\s\sescreveu\:)? ?repeats the group contents below at most once:
1st Alternative[^@]+@\w+\.\w+\.\w+ Negated Character Class[^@]+ +matches at least one character outside the set below:
@the literal @ (6410 / 1008 / 4016)
@the literal @ (6410 / 1008 / 4016)
\w+any word character, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\w+any word character, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\w+any word character, repeated at least once
2nd Alternative,\s\sescreveu\: ,the literal , (4410 / 548 / 2C16)
\sany whitespace character
\sany whitespace character
escreveuthe literal text escreveu (case sensitive) \:the literal : (5810 / 728 / 3A16)