Format         ; Parent Format  ; Comment
XXXX XXX XXX   ; fmt_kz_4/2/2/2 ; "Alternate KZ formatting (4-digit prefixes)"
XXXXX XXXXX    ; fmt_kz_5/1/2/2 ; "Alternate KZ formatting (5-digit prefixes)"
XXX XXX XX XX  ; fmt_kz_4/2/2/2 ; "Sometimes KZ numbers are formatted in the traditional RU way assuming 3-digit prefixes everywhere."
XXX XXX XX XX  ; fmt_kz_5/1/2/2 ; "Sometimes KZ numbers are formatted in the traditional RU way assuming 3-digit prefixes everywhere."
XXX XX XX XXX  ; fmt_kz_3/3/4   ; "Alternate formatting for 3-digit prefixes"
XXX X XX XX XX ; fmt_kz_3/3/4   ; "Alternate formatting for 3-digit prefixes"
XXX XX XX XXX  ; fmt_ru_3/3/2/2 ; "Alternate formatting for 3-digit prefixes"
XXX X XX XX XX ; fmt_ru_3/3/2/2 ; "Alternate formatting for 3-digit prefixes"
XXXX XX XX XX  ; fmt_ru_3/3/2/2 ; "Russian numbers are sometimes formatted with a 4-digit prefix"
XXXX XXX XXX   ; fmt_ru_3/3/2/2 ; "Russian numbers are sometimes formatted with a 4-digit prefix"
XXXXX XXXXX    ; fmt_ru_3/3/2/2 ; "Russian numbers are sometimes formatted with a 5-digit prefix - this may in fact only apply to some prefixes, but we don't have a good understanding of which these are so err on the side of including all."