* {"not"} PART neg head 
* {"has","had","have","will","would","do","does","did"} AUX aux head 
CompAP {"is","are","am","was","been","be"} VERB cop head
CompCN {"is","are","am","was","been","be"} VERB cop head
CompAP {"is","are","am","was","been","be"} VERB cop head
CompAdv {"is","are","am","was","been","be"} VERB cop head
UseComp {"is","are","am","was","been","be"} VERB cop head
CompCN {"a","an"} DET det head
ComplVV {"to"} PART mark xcomp