static char DazniausiaiPasikartojantiRaide(string eilute, ref int max)
        {
            eilute = eilute.ToLower();
            char raide=' ';
            string raides = "aąbcčdeęėfghiįyjklmnoprstuūųvzž";
            max = 0;
            int raidesKiekis = 0;
            List<int> visoTextKiekis = new List<int>();

            for (int i = 0; i < raides.Length; i++)
            {
                for (int j = 0; j < eilute.Length; j++)
                {
                    if (eilute[j] == raides[i])
                    {
                        raidesKiekis++;
                    }
                }
               visoTextKiekis.Add(raidesKiekis);
            }
            for (int i = 0; i < visoTextKiekis.Count; i++ )
                if (max < visoTextKiekis[i])
                {
                    max = visoTextKiekis[i];
                    raide = raides[i];

                }
            return raide;
        }