Не выполняется условие

Scanner keyboard = new Scanner(System.in);

       int firstNumber = keyboard.nextInt();
       int secondNumber = keyboard.nextInt();
       int thirdNumber = keyboard.nextInt();

       if (secondNumber == thirdNumber && secondNumber != firstNumber && thirdNumber != firstNumber){
           System.out.println(secondNumber + " " + thirdNumber);
       }// Проверка равности 2 и 3 числа
       else if(firstNumber == secondNumber && secondNumber == thirdNumber && firstNumber == thirdNumber){
           System.out.println(firstNumber + " " + secondNumber + " " + thirdNumber);
       }// Проверка равности всех 3-х
       else if (firstNumber == secondNumber && secondNumber != thirdNumber && firstNumber != thirdNumber ){
           System.out.println(firstNumber + " " + secondNumber);
       }// Проверка равости 1 и 2 числа
       else if (firstNumber != secondNumber && secondNumber != thirdNumber && thirdNumber != firstNumber){
       }// Если ничего не равно