Combinations of letters

import java.util.Scanner;
public class Main
{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        //Reading the characters
        int count = 0;
        System.out.print("Enter the start letter: ");
        char startLetter = sc.next().charAt(0);
        System.out.print("Enter the end letter: ");
        char endLetter = sc.next().charAt(0);
        System.out.print("Enter the letter that you don't want to be included: ");
        char notIncludedLetter = sc.next().charAt(0);
        for(char i = startLetter;i<=endLetter;i++){
            if(i != notIncludedLetter){
             for(char l = startLetter;l<=endLetter;l++){
               if(l != notIncludedLetter){
               for(char u = startLetter;u<=endLetter;u++){
                   if(u != notIncludedLetter){
                        System.out.print(i+ "" + l+"" +u + " ");
                        count++;
                   }
                  }
               }

             }
            }
        }
        System.out.print(" " + count);
    }
}