What do the regex patterns look like and what flavour of regex is expected? I tried the following and they all passed, but I wasn’t expecting them to:
2[6-9][0-1][0-9][0-3][0-9]with an entry of180918;/2[6-9][0-1][0-9][0-3][0-9]/with an entry of180918;/2[6-9][0-1][0-9][0-3][0-9]/with an entry of12;