A major section is constituted by a principal syntactic category.

Internal subdivision is by increasing complexity.

For those syntactic constructions which may be headed by a lexical category:

Example of construction

Diagram 27: Postpositional phrase
instantiation of Diagram 8
[ N ]NPi [(d.medi) Pp ]Pp ]PpP]PpP

inner complement resumptive head

N bearing relation Pp (to context)’