\da Unicode decimal digit
\da Unicode decimal digit
\s*a Unicode whitespace character, repeated any number of times
/the literal / (4710 / 578 / 2F16)
\s*a Unicode whitespace character, repeated any number of times
\da Unicode decimal digit
\da Unicode decimal digit
\s*a Unicode whitespace character, repeated any number of times
/the literal / (4710 / 578 / 2F16)
\s*a Unicode whitespace character, repeated any number of times
\d{4}a Unicode decimal digit, repeated exactly 4 times