Specifiers  Spec
Determiners  Det
Auxiliary verbs  Aux
Conjunctions  Conj
Degree words  Deg
Noun  N
Verb  V
Adjective  A
Adverb  Adv
Prepositional  P
Complement  C
Sentence  S
Inflection  I
Noun Phrase  NP
Verb Phrase  VP
Adjective Phrase  AP
Adverb Phrase  AdvP
Prepositional Phrase  PP
inflection phrase  IP