private static function isAllowedScriptCombination( $scriptList ) {
		$allowedScriptCombinations = [
			[ "SCRIPT_COPTIC", "SCRIPT_COPTIC_EXTRAS" ], # Coptic, using old Greek chars
			[ "SCRIPT_GREEK", "SCRIPT_COPTIC_EXTRAS" ], # Coptic, using new Coptic chars
			[ "SCRIPT_HAN", "SCRIPT_BOPOMOFO" ], # Chinese
			[ "SCRIPT_HAN", "SCRIPT_HANGUL" ], # Korean
			[ "SCRIPT_HAN", "SCRIPT_KATAKANA", "SCRIPT_HIRAGANA" ] # Japanese
		];
		foreach ( $allowedScriptCombinations as $allowedCombo ) {
			if ( self::isSubsetOf( $scriptList, $allowedCombo ) ) {
				return true;
			}
		}
		return false;
	}