using System;

using System.Runtime.InteropServices;

public class Program

{

    public static void Main()

    {

        for(var i = 0; i < 1000; i++)

        {

            var guid1 = Guid.CreateVersion7();

            var guid2 = Guid.CreateVersion7();

            var isGreater = CompareTo(guid2, guid1);

            if (isGreater == 1)

                Console.WriteLine($"{i}: {guid1} :: {guid2}");

        }

    }

    public static int CompareTo(Guid a, Guid b)

    {

        var spanA = MemoryMarshal.AsBytes(MemoryMarshal.CreateSpan(ref a, 1));

        var spanB = MemoryMarshal.AsBytes(MemoryMarshal.CreateSpan(ref b, 1));

        return spanA.SequenceCompareTo(spanB);

    }

}