this.
mas = mas.AddRange(sr.ReadLine().Split(new char[] { ' ' }));
Severity Code Description Project File Line Suppression State
Error CS1503 Argument 1: cannot convert from 'string[]' to 'System.Collections.Generic.IEnumerable<System.Collections.Generic.List<string>>' English learn C:\Users\bezug\source\repos\English learn\Program.cs 16 Active