must envision
Regular verb: envision - envisioned- envisioned

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

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

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

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