using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        string texto = "alteracao de cadastro social";

        //string texto = "alteracao de cadastro - social";

        //string texto = "alteracoes de cadastro social";

        //string texto = "alteracao cadastro social";

        //string texto = "alteracao cadastro - social";

        bool passou = (new Regex(@"(a)(l)(t)(e)(r)(a)(c)(ao|oes)( )(?!de)( )(c)(a)(d)(a)(s)(t)(r)(o|os)( )(?!-)( )(s)(o)(c)(i)(a)(l)").IsMatch(texto));

        Console.WriteLine(passou);

    }

}