can envision
Regular verb: envision - envisioned- envisioned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can envision
you can envision
she can envision
we can envision
you can envision
they can envision 	I can be envisioning
you can be envisioning
she can be envisioning
we can be envisioning
you can be envisioning
they can be envisioning	I can have envisioned
you can have envisioned
she can have envisioned
we can have envisioned
you can have envisioned
they can have envisioned	I can have been envisioning
you can have been envisioning
she can have been envisioning
we can have been envisioning
you can have been envisioning
they can have been envisioning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot envision
you cannot envision
she cannot envision
we cannot envision
you cannot envision
they cannot envision 	I cannot be envisioning
you cannot be envisioning
she cannot be envisioning
we cannot be envisioning
you cannot be envisioning
they cannot be envisioning	I cannot have envisioned
you cannot have envisioned
she cannot have envisioned
we cannot have envisioned
you cannot have envisioned
they cannot have envisioned	I cannot have been envisioning
you cannot have been envisioning
she cannot have been envisioning
we cannot have been envisioning
you cannot have been envisioning
they cannot have been envisioning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I envision?
can you envision?
can she envision?
can we envision?
can you envision?
can they envision? 	can I be envisioning?
can you be envisioning?
can she be envisioning?
can we be envisioning?
can you be envisioning?
can they be envisioning? 	can I have envisioned?
can you have envisioned?
can she have envisioned?
can we have envisioned?
can you have envisioned?
can they have envisioned? 	can I have been envisioning?
can you have been envisioning?
can she have been envisioning?
can we have been envisioning?
can you have been envisioning?
can they have been envisioning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not envision?
can you not envision?
can she not envision?
can we not envision?
can you not envision?
can they not envision? 	can I not be envisioning?
can you not be envisioning?
can she not be envisioning?
can we not be envisioning?
can you not be envisioning?
can they not be envisioning? 	can I not have envisioned?
can you not have envisioned?
can she not have envisioned?
can we not have envisioned?
can you not have envisioned?
can they not have envisioned? 	can I not have been envisioning?
can you not have been envisioning?
can she not have been envisioning?
can we not have been envisioning?
can you not have been envisioning?
can they not have been envisioning?