\w{2}any word character, repeated exactly 2 times
?matches at most one character from the set below:
\-the literal - (4510 / 558 / 2D16)
\ the literal (3210 / 408 / 2016)
\d{2}a digit, repeated exactly 2 times
?matches at most one character from the set below:
\-the literal - (4510 / 558 / 2D16)
\ the literal (3210 / 408 / 2016)
\w{2}any word character, repeated exactly 2 times