import java.util.Scanner; public class three_letter { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.print("Enter a five-letter word: "); String word = sc.nextLine(); if (word.length() != 5) { System.out.println("Please enter a valid five-letter word."); } else { for (int i = 0; i < 5; i++) { for (int j = 0; j < 5; j++) { for (int k = 0; k < 5;s k++) { if (i != j && j != k && i != k) { String threeLetterWord = "" + word.charAt(i) + word.charAt(j) + word.charAt(k); System.out.println(threeLetterWord); } } } } } } }