Получение уникальных значения списка (C sharp)

using System;
using System.Collections.Generic;
using System.Linq;
internal static class Test{
   private static void Main(){
       var test_list = new List<List<string>> {};
       test_list.Add(new List<string> { "01","02" });
       test_list.Add(new List<string> { "01","02" });
       test_list.Add(new List<string> { "01","01" });
       test_list = test_list.Distinct(new ListEqualityComparer<string>()).ToList();
       test_list.ForEach(list=>Console.WriteLine(string.Join(",",list)));
   }
}
public class ListEqualityComparer<T>:EqualityComparer<List<T>>{
   private IEqualityComparer<T> elementComparer;
   public ListEqualityComparer():this(null){}
   public ListEqualityComparer(IEqualityComparer<T> elementComparer){
       this.elementComparer=elementComparer??EqualityComparer<T>.Default;
   }
   public override int GetHashCode(List<T> list){
       return list.Aggregate(0,(i,e)=>i^elementComparer.GetHashCode(e));
   }
   public override bool Equals(List<T> first,List<T> second){
       return first.SequenceEqual(second,elementComparer);
   }
}