Help with C# to compare data

Question

am trying to compare a set of integers (say alpha) with the result i am getting (say result) if result is in alpha i should be able to get the output as mentioned in example below alpha = 0,1,2,3,4,5,6,7 result = 0,5,6

Final answer should be ABBBBAAB and what i am getting is ABBBBBBB BBBBBABB BBBBBBAB

public static int[] alpha = new int[8] { 0,1,2,3,4,5,6,7 };

public static void Main(string[] args)

{

// Lines of code

foreach (var jagged in manager.JaggedList)

{

// Lines of code

foreach (var item in Items)

{ Console.Write(item.Number); //For Ex output here is (0,5,6)

List<int> result = new List<int>();

result.Add(item.Number);

foreach (var Var in result)

{

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

{

if (result.Contains(alpha[i]))

{

Console.Write(alpha[A]);

}

else

{

Console.Write(alpha[B]);

}

}

}

Console.WriteLine();

}

}