using System;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
 
public class Test
{
 
	public static void Main()
	{
            string fullText = "**LOAD SUBCASE1  SUBTITLE2 LOAD SUBCASE3 SUBTITLE4 load Load Load**";
 
            var words = fullText.Split().Select((w, i) => new{Word = w, Index = i});
            var matches = words.Where(w =>  StringComparer.OrdinalIgnoreCase.Equals("load", w.Word));
            foreach(var match in matches)
            {
                Console.WriteLine("Index: {0}", match.Index);
            }           
	}   
}
 
 
 

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