can preinvestigate
Verbe régulier : preinvestigate - preinvestigated- preinvestigated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can preinvestigate
you can preinvestigate
she can preinvestigate
we can preinvestigate
you can preinvestigate
they can preinvestigate 	I can be preinvestigating
you can be preinvestigating
she can be preinvestigating
we can be preinvestigating
you can be preinvestigating
they can be preinvestigating	I can have preinvestigated
you can have preinvestigated
she can have preinvestigated
we can have preinvestigated
you can have preinvestigated
they can have preinvestigated	I can have been preinvestigating
you can have been preinvestigating
she can have been preinvestigating
we can have been preinvestigating
you can have been preinvestigating
they can have been preinvestigating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot preinvestigate
you cannot preinvestigate
she cannot preinvestigate
we cannot preinvestigate
you cannot preinvestigate
they cannot preinvestigate 	I cannot be preinvestigating
you cannot be preinvestigating
she cannot be preinvestigating
we cannot be preinvestigating
you cannot be preinvestigating
they cannot be preinvestigating	I cannot have preinvestigated
you cannot have preinvestigated
she cannot have preinvestigated
we cannot have preinvestigated
you cannot have preinvestigated
they cannot have preinvestigated	I cannot have been preinvestigating
you cannot have been preinvestigating
she cannot have been preinvestigating
we cannot have been preinvestigating
you cannot have been preinvestigating
they cannot have been preinvestigating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I preinvestigate?
can you preinvestigate?
can she preinvestigate?
can we preinvestigate?
can you preinvestigate?
can they preinvestigate? 	can I be preinvestigating?
can you be preinvestigating?
can she be preinvestigating?
can we be preinvestigating?
can you be preinvestigating?
can they be preinvestigating? 	can I have preinvestigated?
can you have preinvestigated?
can she have preinvestigated?
can we have preinvestigated?
can you have preinvestigated?
can they have preinvestigated? 	can I have been preinvestigating?
can you have been preinvestigating?
can she have been preinvestigating?
can we have been preinvestigating?
can you have been preinvestigating?
can they have been preinvestigating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not preinvestigate?
can you not preinvestigate?
can she not preinvestigate?
can we not preinvestigate?
can you not preinvestigate?
can they not preinvestigate? 	can I not be preinvestigating?
can you not be preinvestigating?
can she not be preinvestigating?
can we not be preinvestigating?
can you not be preinvestigating?
can they not be preinvestigating? 	can I not have preinvestigated?
can you not have preinvestigated?
can she not have preinvestigated?
can we not have preinvestigated?
can you not have preinvestigated?
can they not have preinvestigated? 	can I not have been preinvestigating?
can you not have been preinvestigating?
can she not have been preinvestigating?
can we not have been preinvestigating?
can you not have been preinvestigating?
can they not have been preinvestigating?