@spec card_prefixes() :: [{String.t(), pos_integer()}]

@spec currencies() :: [[nonempty_binary(), ...], ...]

@spec emojis() :: [String.t(), ...]

@spec en_words() :: [String.t(), ...]

@spec language_codes() :: [String.t(), ...]

@spec timezones() :: [String.t(), ...]

@spec uppercase_letters() :: [String.t(), ...]