*repeats the group contents below any number of times:
,the literal , (4410 / 548 / 2C16)
\d{1,2}+a digit, repeated between 1 and 2 times
?matches at most one character from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)