I have a global TitleBlacklist entry for my username as `.*marcoaurelio.* <newaccountonly|antispoof>`. Still today someone managed to create a troll account `MarcoAureIio`. Testing with https://meta.wikimedia.org/wiki/Special:AbuseFilter/tools resulted as follows:
* `norm('MarcoAureIio')` == `MARCOAUREIO`
* `ccnorm('MarcoAureIio')` == `MARCOAUREIIO`
It looks like `I` should be added as equivalent of `l`. Also lowercase el `l` should map as well to a vertical bar `|`.