We assume that each terminal leaf v of every elementary tree schema ½ has been labeled by a pre-terminal name of the form is an optional occurrence index.
4 the association George " n-n nxn-n nn-n " means that the inflected form "George" is a noun (suffix -n) that can occur in all trees of the "n", "nxn" or "nn" families (everywhere a terminal leaf of category noun occurs).