add extr regex check to detect plurals

utils.py

@@ -836,6 +836,11 @@ PLURAL_TO_SINGULAR_EXCLUSIONS = [
 
 p = inflect.engine()
 
+def is_plural_regex(word):
+    """Detect if a word is plural using common pluralization rules."""
+    # Check for common plural forms
+    return re.search(r'(s$|es$|ies$)', word.lower()) and not re.search(r'(ss$)', word.lower())
+
 def is_plural_wordnet(word):
     # Check if WordNet has both singular and plural forms
     singular_synsets = wordnet.synsets(word, pos=wordnet.NOUN)
@@ -860,6 +865,8 @@ def plural_to_singular(word):
     """Convert plural word to singular using inflect."""
     if is_plural(word):
         return p.singular_noun(word) or word 
+    if is_plural_regex(word):
+        return p.singular_noun(word) or word 
     if is_plural_wordnet(word):
         return p.singular_noun(word) or word 
     return word