using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var hexString = "00000B00A0000111";

        var stringPairs = Enumerable

            .Range(0, hexString.Length)

            .GroupBy(x => x / 2)            

            .Select(x => new string(x.Select(y => hexString[y]).ToArray()))         

            .SkipWhile(x => x == "00")

            .ToList();

        foreach (var pair in stringPairs)

            Console.WriteLine(pair);

    }

}