Find Unique Palindrome

Write a function that reads a list of words and returns the unique palindromic words. A palindrome is a word that reads the same forward and backward. The output should be a sorted list of unique palindromic words. Ignore case sensitivity. Input format: - A single line containing space-separated words. Output format: - A single line containing space-separated unique palindromic words, sorted alphabetically. Example: Input: Civic radar level deed racecar refer Output: deck level radar civic racecar refer