[Jumpstart C#] Create three-dimensional array

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace three_dimensional_array
{
    class Program
    {
        static void Main(string[] args)
        {
            char[, ,] chCube =
            {
                //first layer
              {
               {'a', 'b', 'c'}, //row 0 values
               {'d', 'e', 'f'}, //row 1 values
               {'g', 'h', 'i'}  //row 2 values
              },
                //second layer
              {
               {'j', 'k', 'l'}, //row 0 values
               {'m', 'n', 'o'}, //row 1 values
               {'p', 'q', 'r'}  //row 2 values
              },
                //third layer
              {
               {'s', 't', 'u'}, //row 0 values
               {'v', 'w', 'x'}, //row 1 values
               {'y', 'z', '0'}  //row 2 values
              }
            }; //The cube size is 3 x 3 x 3 (3 layers, 3 rows, 3 columns)
        }
    }
}