I must enervate you must enervate he must enervate we must enervate you must enervate they must enervate
V-ing form
I must be enervating you must be enervating he must be enervating we must be enervating you must be enervating they must be enervating
Perfect
I must have enervated you must have enervated he must have enervated we must have enervated you must have enervated they must have enervated
V-ing perfect
I must have been enervating you must have been enervating he must have been enervating we must have been enervating you must have been enervating they must have been enervating
Negation
Simple form
I mustn't enervate you mustn't enervate he mustn't enervate we mustn't enervate you mustn't enervate they mustn't enervate
V-ing form
I mustn't be enervating you mustn't be enervating he mustn't be enervating we mustn't be enervating you mustn't be enervating they mustn't be enervating
Perfect
I mustn't have enervated you mustn't have enervated he mustn't have enervated we mustn't have enervated you mustn't have enervated they mustn't have enervated
V-ing perfect
I mustn't have been enervating you mustn't have been enervating he mustn't have been enervating we mustn't have been enervating you mustn't have been enervating they mustn't have been enervating
Interrogative form
Simple form
must I enervate? must you enervate? must he enervate? must we enervate? must you enervate? must they enervate?
V-ing form
must I be enervating? must you be enervating? must he be enervating? must we be enervating? must you be enervating? must they be enervating?
Perfect
must I have enervated? must you have enervated? must he have enervated? must we have enervated? must you have enervated? must they have enervated?
V-ing perfect
must I have been enervating? must you have been enervating? must he have been enervating? must we have been enervating? must you have been enervating? must they have been enervating?
Interro-negative form
Simple form
mustn't I enervate? mustn't you enervate? mustn't he enervate? mustn't we enervate? mustn't you enervate? mustn't they enervate?
V-ing form
mustn't I be enervating? mustn't you be enervating? mustn't he be enervating? mustn't we be enervating? mustn't you be enervating? mustn't they be enervating?
Perfect
mustn't I have enervated? mustn't you have enervated? mustn't he have enervated? mustn't we have enervated? mustn't you have enervated? mustn't they have enervated?
V-ing perfect
mustn't I have been enervating? mustn't you have been enervating? mustn't he have been enervating? mustn't we have been enervating? mustn't you have been enervating? mustn't they have been enervating?