def uses_na_format(station: str) -> bool:
if station[<NUM_LIT:0>] in NA_REGIONS:<EOL><INDENT>return True<EOL><DEDENT>if station[<NUM_LIT:0>] in IN_REGIONS:<EOL><INDENT>return False<EOL><DEDENT>if station[:<NUM_LIT:2>] in M_NA_REGIONS:<EOL><INDENT>return True<EOL><DEDENT>if station[:<NUM_LIT:2>] in M_IN_REGIONS:<EOL><INDENT>return False<EOL><DEDENT>raise BadStation("<STR_LIT>")<EOL>
Returns True if the station uses the North American format,
False if the International format