public static void Main()
string display = string.Empty;
char[][, ] charArray = new char[2][, ]{new char[, ]{{'A', 'B', 'C'}, {'D', 'E', 'F'}}, new char[, ]{{'G', 'H'}, {'I', 'J'}}, };
for (int i = 0; i < charArray.Length; i++)
display += $"Element({i}): \n";
for (int j = 0; j < charArray[i].GetLength(0); j++)
for (int k = 0; k < charArray[i].GetLength(1); k++)
display += charArray[i][j, k].ToString() + " ";
Console.WriteLine(display);