how to split a array elements and assign another array elements

input1 = new string[4] { "A", " B", " C", " D" };

input2 = new int[6] { 2, 3, 1, 5, 4, 3 };

{A,B}=2,{A,C}=3,{A,D}=1<br />
{B,C}=5,{B,D}=4,{C,D}=3

public static void minimum_cost(out string[] input1, out int[] input2)
        {

            input1 = new string[4] { "A", " B", " C", " D" };
            input2 = new int[6] { 2, 3, 1, 5, 4, 3 };
              int i = 0;
            int j = 0;
            var query = from s in input1
                        let num = i++
                        group s by num / 2 into g
                        select g.ToArray();
            var results = query.ToArray();

            var query2 = from s1 in input2
                        let num1 = j++
                        group s1 by num1 / 1 into g1
                        select g1.ToArray();
            var results2 = query.ToArray();
            foreach (string[] r1 in results)
            {
                Console.WriteLine("{0}",r1);
            }
            foreach (string[] r2 in results2)
            {
                Console.WriteLine("{0}", r2);
            } 
    
         
        }