class RegExpressions {

        static RegExp general = RegExp('[a-z A-Z á-ú Á-Ú 0-9 .?;% \n]');

        static RegExp onlyNumbers = RegExp('[0-9]');

        static RegExp emailText = RegExp('[a-z A-Z á-ú Á-Ú 0-9 @.]');

        static RegExp allowedText = RegExp('[a-z A-Z 0-9 . \n]');

        static RegExp bannedCharacters = RegExp(r'[<>:"/\\|?*]');

        static RegExp endWithDot = RegExp(r'[.]+$');

        static RegExp onlyLettersWithSpace = RegExp('[a-z A-Z]');

        static RegExp onlyLettersWithSpaceExtendedLatin = RegExp('[a-z A-Z á-ú Á-Ú]');

        static RegExp onlyLettersNumbersWithSpace = RegExp('[a-z A-Z 0-9]');

        static RegExp onlyLettersNumbersWithSpaceExtendedLatin = RegExp('[a-z A-Z á-ú Á-Ú 0-9]');

        static RegExp onlyLetters = RegExp('[a-zA-Z]');

        static RegExp onlyCapitalLettersNumbers = RegExp('[a-zA-Z0-9]');
    }