$13.$ Ask the user to enter a user id in the following format: $$ AAAA$-$#### $$ The first four characters must be a$-$z and$/$or A$-$Z$.$ The next four are numbers. $$ example: RWVT$-773314.$ Use regular expressions to verify the user id supplied by the user meets format above. If not, inform the user and ask them to retry or exit. $15.$ After verifying the user id meets the format, verify that one of the following user ids has been entered. $16.$ Only accept the following user ids: $$ gdrt$-8493,$ DBTF$-6253,$ UyHt$-8326,$ YYrv$-5329,$ qzrb$-826417.$ After successful entry, display a message stating, $$Thank you for entering your user id$.$