sex, year and month of birth, and department of birth).

Their format is as follows: syymmlloookkk cc, where
* s is 1 for a male, 2 for a female,
* yy are the last two digits of the year of birth,
* mm is the month of birth, usually 01 to 12 (but there are special values for persons whose exact date of birth is not known),
* ll is the number of the department of origin : 2 digits, or 1 digit and 1 letter in metropolitan France, 3 digits for overseas.
* ooo is the commune