1?optionally matches the literal 1 (4910 / 618 / 3116)
\W*any character that is not a Unicode word character, repeated any number of times
2-9one character from 2 (5010) to 9 (5710)
0-8one character from 0 (4810) to 8 (5610)
0-9one character from 0 (4810) to 9 (5710)
\W*any character that is not a Unicode word character, repeated any number of times
2-9one character from 2 (5010) to 9 (5710)
{2}matches exactly 2 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
\W*any character that is not a Unicode word character, repeated any number of times
{4}matches exactly 4 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)