English verb conjugation
MUST ENVELOP

Regular verb: envelop - enveloped - enveloped

Affirmation

Simple form	V-ing form
I must envelop you must envelop he must envelop we must envelop you must envelop they must envelop	I must be enveloping you must be enveloping he must be enveloping we must be enveloping you must be enveloping they must be enveloping
Perfect	V-ing perfect
I must have enveloped you must have enveloped he must have enveloped we must have enveloped you must have enveloped they must have enveloped	I must have been enveloping you must have been enveloping he must have been enveloping we must have been enveloping you must have been enveloping they must have been enveloping

Negation

Simple form	V-ing form
I mustn't envelop you mustn't envelop he mustn't envelop we mustn't envelop you mustn't envelop they mustn't envelop	I mustn't be enveloping you mustn't be enveloping he mustn't be enveloping we mustn't be enveloping you mustn't be enveloping they mustn't be enveloping
Perfect	V-ing perfect
I mustn't have enveloped you mustn't have enveloped he mustn't have enveloped we mustn't have enveloped you mustn't have enveloped they mustn't have enveloped	I mustn't have been enveloping you mustn't have been enveloping he mustn't have been enveloping we mustn't have been enveloping you mustn't have been enveloping they mustn't have been enveloping

Interrogative form

Simple form	V-ing form
must I envelop? must you envelop? must he envelop? must we envelop? must you envelop? must they envelop?	must I be enveloping? must you be enveloping? must he be enveloping? must we be enveloping? must you be enveloping? must they be enveloping?
Perfect	V-ing perfect
must I have enveloped? must you have enveloped? must he have enveloped? must we have enveloped? must you have enveloped? must they have enveloped?	must I have been enveloping? must you have been enveloping? must he have been enveloping? must we have been enveloping? must you have been enveloping? must they have been enveloping?

Interro-negative form

Simple form	V-ing form
mustn't I envelop? mustn't you envelop? mustn't he envelop? mustn't we envelop? mustn't you envelop? mustn't they envelop?	mustn't I be enveloping? mustn't you be enveloping? mustn't he be enveloping? mustn't we be enveloping? mustn't you be enveloping? mustn't they be enveloping?
Perfect	V-ing perfect
mustn't I have enveloped? mustn't you have enveloped? mustn't he have enveloped? mustn't we have enveloped? mustn't you have enveloped? mustn't they have enveloped?	mustn't I have been enveloping? mustn't you have been enveloping? mustn't he have been enveloping? mustn't we have been enveloping? mustn't you have been enveloping? mustn't they have been enveloping?