mirror_words

import re

text = input()
pattern = r"(@|#)([A-Za-z]{3,})\1\1([A-Za-z]{3,})\1"

matches = re.finditer(pattern, text)
counter = 0
palindromes = []
for match in matches:
    first_word = match.group(2)
    second_word = match.group(3)
    counter += 1
    if first_word == second_word[::-1]:
        palindromes.append(f"{first_word} <=> {second_word}")

if counter == 0:
    print("No word pairs found!")
    print("No mirror words!")
else:
    print(f"{counter} word pairs found!")
    if not palindromes:
        print("No mirror words!")
    else:
        print(f"""The mirror words are:
{", ".join(palindromes)}""")