widthgen.cs

var dic = Enumerable.Range(char.MinValue, char.MaxValue)
    .Select(i =>
    {
        Console.Clear();
        Console.CursorTop = 0;
        Console.CursorLeft = 0;
        Console.Write((char) i);
        return Console.CursorTop != 0 || Console.CursorLeft != 1
            ? Tuple.Create(i, Console.CursorLeft)
            : null;
    })
    .Where(t => t != null)
    .ToDictionary(_ => _.Item1, _ => _.Item2);