> The only problem is that if you run off the end of the alphabet, you get
> characters which are non-letters (A B C D E F G H I J K L M N O P Q R S T
> U V W X Y Z [ \ ] ^ _ `) while in such a lettering scheme, I'd think you'd
> expect to start getting double letters. (A B C D E F G H I J K L M N O P Q
> R S T U V W X Y Z AA AB AC AD AE AF)