public static void Main()
string display = string.Empty;
char[][] charArray = {new[]{'A', 'B', 'C'}, new[]{'D', 'E'}};
for (int i = 0; i < charArray.GetLength(0); i++)
for (int j = 0; j < charArray[i].Length; j++)
display += charArray[i][j].ToString() + " ";
Console.WriteLine(display);