static int SkirtBalsiuSkaicius(string e)
        {
            int balsiuSk = 0;
            char[] balses = { 'a', 'e', 'i', 'y', 'o', 'u'};
            string paversta = e.ToLower();
            for (int i = 0; balses.Length > i; i++)
                if (paversta.IndexOf(balses[i]) >= 0)
                    balsiuSk++;
            return balsiuSk;
        }