//Paste your solution here if you want to share it publicly alpha = "abcdefghijklmnopqrstuvwxyz" def is_non_decreasing(word): # Clean the word word = word.strip().lower() # Skip empty or words with non-letters if not word or not word.isalpha(): return False prev_index = -1 # before 'a' for char in word: idx = alpha.index(char) if idx < prev_index: return False prev_index = idx # update to current position return True # ─── Read from file and print only matching words ──────────────── with open('data.txt', 'r', encoding='utf-8') as f: for line in f: words = line.split() for word in words: if is_non_decreasing(word): print(word)