predict the output

class Sook
{
    public static void main(String args[])
     {
        int num [][] = new int [3][];
        num [0] = new int [3];
        num [1] = new int [2];
        num [2] = new int [1];
        num [0][0] = 1;
        num [0][1] = 2;
        num [0][2] = 3;
        num [1][0] = 4;
        num [1][1] = 5;
        num [2][0] = 6;
        for (int i = 0; i num.length; i++)
         {
            for (int j = 0; j num[i].length; j++) 
            {
                System.out.print(" "+num[i][j]);
            }
            System.out.println();
        }
    }
}