using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var listOfArrays = new List<int[]> { new[] {1,2,3}, new[] {4,5,6}, new[] {7,8,9} };

        var shuffledListOfArray = listOfArrays.OrderBy(_ => Guid.NewGuid()).ToList();

        shuffledListOfArray.ForEach(x => Console.WriteLine(string.Join(separator: " ", x)));

    }

}