public static void main(String[] args) {
   LetterToSound text = LetterToSound.getInstance();
   System.out.println(Arrays.asList(text.getPhones("laggin", "n")));
   System.out.println(Arrays.asList(text.getPhones("dragon", "n")));
   System.out.println(Arrays.asList(text.getPhones("hello", "n")));
   // System.out.println(Arrays.asList(text.getPhones("antelope", "n")));
 }