diff --git a/inflection/__init__.py b/inflection/__init__.py
index ffac5ce..4395b33 100644
--- a/inflection/__init__.py
+++ b/inflection/__init__.py
@@ -88,7 +88,9 @@
     'rice',
     'series',
     'sheep',
-    'species'}
+    'species',
+    'diabetes'
+}
 
 
 def _irregular(singular: str, plural: str) -> None:
@@ -419,11 +421,15 @@ def underscore(word: str) -> str:
     return word.lower()
 
 
-_irregular('person', 'people')
-_irregular('man', 'men')
-_irregular('human', 'humans')
+_irregular('cow', 'kine')
 _irregular('child', 'children')
-_irregular('sex', 'sexes')
+_irregular('foot', 'feet')
+_irregular('goose', 'geese')
 _irregular('move', 'moves')
-_irregular('cow', 'kine')
+_irregular('person', 'people')
+_irregular('sex', 'sexes')
 _irregular('zombie', 'zombies')
+
+# more specific rules at the end
+_irregular('man', 'men')
+_irregular('human', 'humans')
\ No newline at end of file
diff --git a/test_inflection.py b/test_inflection.py
index f1e64a3..1555325 100644
--- a/test_inflection.py
+++ b/test_inflection.py
@@ -112,7 +112,9 @@
 
     ("cow", "kine"),
     ("database", "databases"),
-    ("human", "humans")
+    ("human", "humans"),
+    ("goose", "geese"),
+    ("foot", "feet")
 )
 
 CAMEL_TO_UNDERSCORE: TestParameters = (