The ANLT morphological analyser performs regular inflectional morphology using a unification grammar for combining morphemes and rules governing spelling changes when morphemes are concatenated.
a plural noun such as patients is composed of the morphemes patient and +s with the features on the top node being inherited partially from the noun and partially from the inflectional affix: In dealing with word tag pairs, we have used the word grammar to treat the tag as a novel kind of affix which constrains the category of the lexical entry it attaches to.