Along with a standard form, each type of categorical statement has numerous stylistic variants. In such cases, one must rewrite the variant into the standard form. Every cat is a mammal. Each cat is a mammal. Cats are mammals.
Any cat is a mammal.
If anything is a cat, then it is a mammal. Things are cats only if they are mammals. Only mammals are cats. All cats are mammals. Nothing that is a whale is a human.