public List <int> GetLevelListFromCode()
        {
            string letters = "abcdefghijklmn";
            int    pos1    = 0;
            var    levels  = new List <int>();

            foreach (char ch in letters)
            {
                if (ch == 'a')
                {
                    continue;
                }
                int pos2 = TestCode.IndexOf(ch);
                if (pos2 > 0)
                {
                    levels.Add(int.Parse(TestCode.Substring(pos1 + 1, pos2 - pos1 - 1)));
                    pos1 = pos2;
                }
                else
                {
                    levels.Add(int.Parse(TestCode.Substring(pos1 + 1)));
                    break;
                }
            }

            return(levels);
        }