private List <string> OrdinalNumber(Treatment treatment) { Number ordinal = new Ordinal("Ordinal"); try { ordinal.Translate(treatment); } catch (InvalidNumber ex) { return(new List <string> { "Error", ex.Message }); } List <string> list = ordinal.GetResults(); if (list.Count.Equals(2)) { list[0] = list[0]; list[1] = list[1]; } else if (list.Count.Equals(1)) { list[0] = list[0]; } if (list.Count > 0) { list.Insert(0, "2"); } return(list); }