Five Special Letters

using System;
using System.Collections.Generic;
    class Program
    {
        static int WeightCalculation(List<int> weights)
        {
            for (int i = 0; i < weights.Count-1; i++)
            {
                for (int j = i + 1; j < weights.Count; j++)
                {
                    if (weights[i] == weights[j])
                    {
                        weights.RemoveAt(j);
                         j--;
                    }
                }
            }

            int weight = 0;
            for (int i = 0; i < weights.Count; i++)
            {
                weight += (i + 1) * weights[i];
            }
            return weight;
        }
        static void Main(string[] args)
        {
            int start = int.Parse(Console.ReadLine());
            int end = int.Parse(Console.ReadLine());

            int counter = 0, weight;
            int[] weights = { 5, -12, 47, 7, -32 };
            char[] symbols = { 'a', 'b', 'c', 'd', 'e' };

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

            for (int a = 0; a < weights.Length; a++)
            {

                for (int b = 0; b < weights.Length; b++)
                {

                    for (int c = 0; c < weights.Length; c++)
                    {

                        for (int d = 0; d < weights.Length; d++)
                        {

                            for (int e = 0; e < weights.Length; e++)
                            {

                                weightsTemp.Add(weights[a]);
                                weightsTemp.Add(weights[b]);
                                weightsTemp.Add(weights[c]);
                                weightsTemp.Add(weights[d]);
                                weightsTemp.Add(weights[e]);

                                weight = WeightCalculation(weightsTemp);

                                 if (weight >= start && weight <= end)
                                 {
                                     counter++;
                                     Console.Write("" + symbols[a] + symbols[b] + symbols[c] + symbols[d] + symbols[e] + " ");
                                 }


                                weightsTemp.RemoveRange(0, weightsTemp.Count);

                            }

                        }

                    }

                }

            }

            if (counter == 0)
            {
                Console.Write("No");
            }
        }
    }