Patestin

Patestin is one of the cartoon- or game-character identification IDs created by BartToons.

Name (3 letters)
The first three consonants of the character's name. If the surname has less than three consonants, then vowels will replace the blank spaces. If the whole surname has less than three letters, the blank spaces are replaced with an X. (For example, Daffy Duck becames DFF, Donald Duck becames DNL).

Age (3 digits)
The character's age. If the character's age is unknown or unconfirmed, it is replaced with XXX.

Year and birth (7 alphanumeric characters)
Year of birth (four digits): the year of birth is used

Month of birth (one letter): each single month is associated with one letter, as shown in the table: Birthday and gender (2 digits): the two birthday digits are used (from 01 to 31); if the person is a woman, 40 is added (e.g. 01 would be 41, 31 would be 71).

Creators (4 alphanumeric characters)
The next 4 alphanumeric characters indicate the creator (but only 2 were used). If there are two or more creators, a number of creators is used before it's first creator.

Random (6 alphanumeric characters)
The next six digits are random letters.

Checksum letter (1 letter)
Starting from the preceding characters, a check digit is determined as follows:
 * the eight odd characters (1st, 3rd, 5th, etc.) are set apart; same thing for the seven even ones (2nd, 4th, 6th, etc.).
 * after that, each single character is converted into a numeric value as show in the tables below:


 * after that, all of the values are to be added up, and the final result has to be divided by 26; the remainder (Modulo) will give the last character, according to the following table: