using System;
using System.Linq;
 
public class Test
{
	public static void Main()
	{
            string[] arrayA = {"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse congue elit ut justo hendrerit sit", "notgin like good cold beer"};
            string[] arrayB = {"justo","beer","lorem"};
 
            var result = arrayA.Select(a => new{
                A = a,
                bContains = arrayB.Where(b => a.IndexOf(b, 0, StringComparison.CurrentCultureIgnoreCase) > -1)  .ToArray()          
            });
 
            foreach(var x in result)
            {
                Console.WriteLine("A{0}:--contains-->{1}", x.A, string.Join(",", x.bContains.ToArray())); 
            }	
	}
}

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