22.1.Five Special Letters-мое решение недовършена

using System;
class FiveSpecialLetters
{
    static void Main()
    {
        int minValue = int.Parse(Console.ReadLine());
        int maxValue = int.Parse(Console.ReadLine());
        char startLetter = 'a';
        char[] vector = new char[5];
        Recursive(vector, 4);
    }
    static void Recursive(char[] vector, int index)
    {
        if(index == -1)
        {
            FindWeight(vector);
        }
        else
        {
            for (char i = 'a'; i <= 'e'; i++)
            {
                vector[index] = i;
                Recursive(vector, index - 1);
            }
        }
    }
    static void FindWeight(char[] vector)
    {
        bool isBeenHereA = true, isBeenHereB = true,
            isBeenHereC = true, isBeenHereD = true, isBeenHereE = true;
        int weight = 0;
        int index = 1;
        for (int i = 0; i < 5; i++)
        {
            if (vector[i] == 'a' && isBeenHereA)
            {
                weight += (index) * 5;
                isBeenHereA = false;
                index++;
            }
            else if (vector[i] == 'b' && isBeenHereB)
            {
                weight += (index) * -12;
                isBeenHereB = false;
                index++;
            }
            else if (vector[i] == 'c' && isBeenHereC)
            {
                weight += (index) * 47;
                isBeenHereC = false;
                index++;
            }
            else if (vector[i] == 'd' && isBeenHereD)
            {
                weight += (index) * 7;
                isBeenHereD = false;
                index++;
            }
            else if (vector[i] == 'e' && isBeenHereE)
            {
                weight += (index) * -32;
                isBeenHereE = false;
                index++;
            }
        }
        if(weight >= 40 && weight <= 42)
        {
            for (int i = 0; i < 5; i++)
            {
                Console.Write(vector[i]);
            }
            Console.WriteLine();
        }
    }
}