could preinvestigate preinvestigate
Regular verb: preinvestigate preinvestigate - preinvestigate preinvestigated- preinvestigate preinvestigated

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could preinvestigate preinvestigate
you could preinvestigate preinvestigate
he could preinvestigate preinvestigate
we could preinvestigate preinvestigate
you could preinvestigate preinvestigate
they could preinvestigate preinvestigate 	I could be preinvestigate preinvestigating
you could be preinvestigate preinvestigating
he could be preinvestigate preinvestigating
we could be preinvestigate preinvestigating
you could be preinvestigate preinvestigating
they could be preinvestigate preinvestigating	I could have preinvestigate preinvestigated
you could have preinvestigate preinvestigated
he could have preinvestigate preinvestigated
we could have preinvestigate preinvestigated
you could have preinvestigate preinvestigated
they could have preinvestigate preinvestigated	I could have been preinvestigate preinvestigating
you could have been preinvestigate preinvestigating
he could have been preinvestigate preinvestigating
we could have been preinvestigate preinvestigating
you could have been preinvestigate preinvestigating
they could have been preinvestigate preinvestigating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not preinvestigate preinvestigate
you could not preinvestigate preinvestigate
he could not preinvestigate preinvestigate
we could not preinvestigate preinvestigate
you could not preinvestigate preinvestigate
they could not preinvestigate preinvestigate 	I could not be preinvestigate preinvestigating
you could not be preinvestigate preinvestigating
he could not be preinvestigate preinvestigating
we could not be preinvestigate preinvestigating
you could not be preinvestigate preinvestigating
they could not be preinvestigate preinvestigating	I could not have preinvestigate preinvestigated
you could not have preinvestigate preinvestigated
he could not have preinvestigate preinvestigated
we could not have preinvestigate preinvestigated
you could not have preinvestigate preinvestigated
they could not have preinvestigate preinvestigated	I could not have been preinvestigate preinvestigating
you could not have been preinvestigate preinvestigating
he could not have been preinvestigate preinvestigating
we could not have been preinvestigate preinvestigating
you could not have been preinvestigate preinvestigating
they could not have been preinvestigate preinvestigating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I preinvestigate preinvestigate?
could you preinvestigate preinvestigate?
could he preinvestigate preinvestigate?
could we preinvestigate preinvestigate?
could you preinvestigate preinvestigate?
could they preinvestigate preinvestigate? 	could I be preinvestigate preinvestigating?
could you be preinvestigate preinvestigating?
could he be preinvestigate preinvestigating?
could we be preinvestigate preinvestigating?
could you be preinvestigate preinvestigating?
could they be preinvestigate preinvestigating? 	could I have preinvestigate preinvestigated?
could you have preinvestigate preinvestigated?
could he have preinvestigate preinvestigated?
could we have preinvestigate preinvestigated?
could you have preinvestigate preinvestigated?
could they have preinvestigate preinvestigated? 	could I have been preinvestigate preinvestigating?
could you have been preinvestigate preinvestigating?
could he have been preinvestigate preinvestigating?
could we have been preinvestigate preinvestigating?
could you have been preinvestigate preinvestigating?
could they have been preinvestigate preinvestigating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not preinvestigate preinvestigate?
could you not preinvestigate preinvestigate?
could he not preinvestigate preinvestigate?
could we not preinvestigate preinvestigate?
could you not preinvestigate preinvestigate?
could they not preinvestigate preinvestigate? 	could I not be preinvestigate preinvestigating?
could you not be preinvestigate preinvestigating?
could he not be preinvestigate preinvestigating?
could we not be preinvestigate preinvestigating?
could you not be preinvestigate preinvestigating?
could they not be preinvestigate preinvestigating? 	could I not have preinvestigate preinvestigated?
could you not have preinvestigate preinvestigated?
could he not have preinvestigate preinvestigated?
could we not have preinvestigate preinvestigated?
could you not have preinvestigate preinvestigated?
could they not have preinvestigate preinvestigated? 	could I not have been preinvestigate preinvestigating?
could you not have been preinvestigate preinvestigating?
could he not have been preinvestigate preinvestigating?
could we not have been preinvestigate preinvestigating?
could you not have been preinvestigate preinvestigating?
could they not have been preinvestigate preinvestigating?