using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Security;  

using System.Security.Cryptography; 

using System.Text;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string line = "hello, I'm here, to fix it";

        bool firstcolumn= false, secondcolumn = false, thirdcolumn= false;

        System.Text.StringBuilder sb = new System.Text.StringBuilder();

        List<string> list1 = new List<string>();

        List<string> list2 = new List<string>();

        List<string> list3 = new List<string>();

          for (int i = 0; i < line.Length; i++)

          {

              if(line[i] != ',' && i != line.Length -1) 

              {

                  sb.Append(line[i]);

                  continue;

              }

              if(!firstcolumn)

              {

                  firstcolumn = true;

                  list1.Add(sb.ToString());

              }

              else if(!secondcolumn)

              {

                  secondcolumn = true;

                  list2.Add(sb.ToString());

              }

              else

              {

                  thirdcolumn = true;

                  list3.Add(sb.ToString());

              }

              sb.Clear();

          }

        list1.Dump();

        list2.Dump();

        list3.Dump();

    }

}

​

​

​

​

​