Format: XXXX-YY-ZZZ-G
Where:
    XXXX: 4-digit National Dex number (padded with zeros)
    YY: 2-digit region code
    ZZZ: 3-digit form index
    G: 1-digit gender code
Region Codes (YY):
    01: Kanto
    02: Johto
    03: Hoenn
    04: Sinnoh
    05: Unova
    06: Kalos
    07: Alola
    08: Galar
    09: Hisui
    10: Paldea
(... expandable for future regions)
Form Index (ZZZ):
    000: Default form
    001-999: Various forms (Mega, Gigantamax, regional variants, etc.)
Gender Code (G):
    0: Genderless or Default
    1: Female
    2: Male
Examples:
    Bulbasaur: 0001-01-000-0
    Female Venusaur: 0003-01-000-1
    Male Venusaur: 0003-01-000-2
    Alolan Rattata (Female): 0019-07-000-1
    Mega Charizard X: 0006-01-001-0
    Galarian Ponyta: 0077-08-000-0
    Hisuian Growlithe: 0058-09-000-0
    Pikachu (Female): 0025-01-000-1
    Unown A: 0201-02-000-0
    Unown B: 0201-02-001-0
    Giratina (Origin Forme): 0487-04-001-0
    Meowth (Galarian): 0052-08-000-0
    Meowth (Alolan): 0052-07-000-0
    Meowth (Gigantamax): 0052-01-001-0